Difference between revisions of "Genealogical Numbering Systems"
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! [[#Sosa-Stradonitz|Sosa-Stradonitz]] | ! [[#Sosa-Stradonitz|Sosa-Stradonitz]] | ||
|- | |- | ||
− | | style="text-align:left" |<!-- Report / | + | | style="text-align:left" |<!-- Report / Addon -->[[Gramps_{{man version}}_Wiki_Manual_-_Reports_-_part_5#Hourglass_Graph|Graphs:Hourglass Graph]] |
|<!-- Desc. Simple numbering --> | |<!-- Desc. Simple numbering --> | ||
|<!-- Desc. d'Aboville --> | |<!-- Desc. d'Aboville --> | ||
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|<!-- Asce. Sosa-Stradonitz --> | |<!-- Asce. Sosa-Stradonitz --> | ||
|- | |- | ||
− | | style="text-align:left" |<!-- Report / | + | | style="text-align:left" |<!-- Report / Addon -->{{icon|ance}} [[Gramps_Glossary#charts_view|{{man label|Charts}}]] [[Gramps_{{man version}}_Wiki_Manual_-_Categories#Fan_Chart_View|Fan Chart]] |
+ | {{icon|ance}} [[Gramps_Glossary#charts_view|{{man label|Charts}}]] [[Gramps_{{man version}}_Wiki_Manual_-_Categories#2-Way_Fan_View|2-Way Fan]] | ||
+ | |<!-- Desc. Simple numbering --> | ||
+ | |<!-- Desc. d'Aboville --> | ||
+ | |<!-- Desc. de Villiers --> | ||
+ | |<!-- Desc. Henry --> | ||
+ | |<!-- Desc. Modified Henry --> | ||
+ | |<!-- Desc. Meurgey de Tupigny --> | ||
+ | |<!-- Desc. Modified Register --> | ||
+ | |<!-- Asce. Ahnentafel --> Ordering <br />Only | ||
+ | |<!-- Asce. Sosa-Stradonitz --> | ||
+ | |- | ||
+ | | style="text-align:left" |<!-- Report / Addon -->[[Addon:DescendantsLines#Display|Graphical Reports:Descendants Lines]] | ||
|<!-- Desc. Simple numbering --> | |<!-- Desc. Simple numbering --> | ||
|<!-- Desc. d'Aboville --> ✔ | |<!-- Desc. d'Aboville --> ✔ | ||
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|<!-- Asce. Sosa-Stradonitz --> | |<!-- Asce. Sosa-Stradonitz --> | ||
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− | | style="text-align:left" |<!-- Report / | + | | style="text-align:left" |<!-- Report / Addon -->[[Gramps_{{man version}}_Wiki_Manual_-_Reports_-_part_6#Ahnentafel_Report|Text Reports:Ahnentafel Report]] |
|<!-- Desc. Simple numbering --> | |<!-- Desc. Simple numbering --> | ||
|<!-- Desc. d'Aboville --> | |<!-- Desc. d'Aboville --> | ||
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|<!-- Asce. Sosa-Stradonitz --> | |<!-- Asce. Sosa-Stradonitz --> | ||
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− | | style="text-align:left" |<!-- Report / | + | | style="text-align:left" |<!-- Report / Addon -->[[Gramps_{{man version}}_Wiki_Manual_-_Reports_-_part_6#Detailed_Ancestral_Report|Text Reports:Detailed Ancestral Report]] |
|<!-- Desc. Simple numbering --> | |<!-- Desc. Simple numbering --> | ||
|<!-- Desc. d'Aboville --> | |<!-- Desc. d'Aboville --> | ||
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|<!-- Asce. Sosa-Stradonitz --> ✔ | |<!-- Asce. Sosa-Stradonitz --> ✔ | ||
|- | |- | ||
− | | style="text-align:left" |<!-- Report / | + | | style="text-align:left" |<!-- Report / Addon -->[[Gramps_{{man version}}_Wiki_Manual_-_Reports_-_part_6#Descendant_Report|Text Reports:Descendant Report]] |
|<!-- Desc. Simple numbering --> ✔ | |<!-- Desc. Simple numbering --> ✔ | ||
|<!-- Desc. d'Aboville --> ✔ | |<!-- Desc. d'Aboville --> ✔ | ||
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|<!-- Asce. Sosa-Stradonitz --> | |<!-- Asce. Sosa-Stradonitz --> | ||
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− | | style="text-align:left" |<!-- Report / | + | | style="text-align:left" |<!-- Report / Addon -->[[Gramps_{{man version}}_Wiki_Manual_-_Reports_-_part_6#Detailed_Descendant_Report|Text Reports:Detailed Descendant Report]] |
|<!-- Desc. Simple numbering --> | |<!-- Desc. Simple numbering --> | ||
|<!-- Desc. d'Aboville --> ✔ | |<!-- Desc. d'Aboville --> ✔ | ||
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− | | style="text-align:left" |<!-- Report / | + | | style="text-align:left" |<!-- Report / Addon -->[[Addon:D3_Ancestral_and_Descendant_Charts#Descendant_Indented_Tree|Web Pages:Descendant Indented Tree]] |
|<!-- Desc. Simple numbering --> ✔ | |<!-- Desc. Simple numbering --> ✔ | ||
|<!-- Desc. d'Aboville --> ✔ | |<!-- Desc. d'Aboville --> ✔ | ||
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|<!-- Asce. Sosa-Stradonitz --> | |<!-- Asce. Sosa-Stradonitz --> | ||
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− | | style="text-align:left" |<!-- Report / | + | | style="text-align:left" |<!-- Report / Addon --> |
|<!-- Desc. Simple numbering --> | |<!-- Desc. Simple numbering --> | ||
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[[File:TextReports-DescendantReport-example-overview-50.png|thumb|right|450px|Fig. {{#var:chapter}}.{{#vardefineecho:figure|{{#expr:{{#var:figure}}+1}}}} Descendant Report - descending generation numbering using [[Example.gramps|Example.gramps]]]] | [[File:TextReports-DescendantReport-example-overview-50.png|thumb|right|450px|Fig. {{#var:chapter}}.{{#vardefineecho:figure|{{#expr:{{#var:figure}}+1}}}} Descendant Report - descending generation numbering using [[Example.gramps|Example.gramps]]]] | ||
{{-}}<span id="ahnentafel"> | {{-}}<span id="ahnentafel"> | ||
− | ==Ahnentafel== | + | <span id="Ahnentafel"> |
− | <!-- | + | ==Ahnentafel Numbering System== |
+ | </span><!-- | ||
− | [[Genealogical Numbering Systems#ahnentafel|Ahnentafel]] | + | [[Genealogical Numbering Systems#ahnentafel|Ahnentafel Numbering System]] |
--> | --> | ||
− | + | (German for "ancestor table") A tabular layout of genealogical data using an ascending system for numbering pedigree ancestors starting with '1' at a focal person. The number of the father is double that of the child. The mother is double the child's number plus one. | |
[[File:Ahnentafel_Example.png|frame|left|450px|Fig. {{#var:chapter}}.{{#vardefineecho:figure|{{#expr:{{#var:figure}}+1}}}} Ahnentafel Report - ascending numbering focused on '''''Jennie S. Garner''''' of [[Example.gramps|Example.gramps]]]] | [[File:Ahnentafel_Example.png|frame|left|450px|Fig. {{#var:chapter}}.{{#vardefineecho:figure|{{#expr:{{#var:figure}}+1}}}} Ahnentafel Report - ascending numbering focused on '''''Jennie S. Garner''''' of [[Example.gramps|Example.gramps]]]] | ||
{{-}} | {{-}} | ||
====Origin==== | ====Origin==== | ||
− | An Austrian nobleman, diplomat, historian, and publicist named [https:// | + | An Austrian nobleman, diplomat, historian, and publicist named [https://wikipedia.org/wiki/Micha%C3%ABl_Eytzinger Michaël Eytzinger] (circa 1530-1598) introduced a new functional theory of numeration of ancestors in 1590 with the Cologne publication of the ''[https://books.google.com/books/about/Thesaurus_principum_hac_aetate_in_Europa.html?id=Hzc8AAAAcAAJ Thesaurus principum hac aetate in Europa viventium]'' ("lexicon of officials in this age in Europe living"). The Ahnentafel (German for "ancestor table") was first illustrated with a 5 generation pedigree of [https://wikipedia.org/wiki/Henry_III_of_France Henry III of France] on pages 146 and 147. |
+ | ====External Links==== | ||
+ | * [http://wikipedia.org/wiki/Ahnentafel Ahnentafel] ''Wikipedia'' | ||
+ | * [https://wikipedia.org/wiki/Genealogical_numbering_systems#Ahnentafel Genealogical Numbering Systems:Ahnentafel] ''Wikipedia'' | ||
+ | * [https://www.tamurajones.net/AhnenChaos.xhtml Ahnen Chaos] - | ||
+ | </span> | ||
+ | <span id="sosa_stradonitz"><span id="kekulé"><span id="kekule"> | ||
+ | |||
+ | ==Sosa-Stradonitz== | ||
+ | ''Also called the '''Kekulé (Kekule)''' numbering system'' | ||
+ | <!-- | ||
− | + | [[Genealogical Numbering Systems#Sosa-stradonitz|Sosa-Stradonitz]] | |
− | |||
− | |||
− | |||
+ | --> | ||
+ | ====Origin==== | ||
+ | Spanish Genealogist [https://wikipedia.org/wiki/Jer%C3%B3nimo_de_Sosa Jerónimo de Sosa] was a 17th-century Spanish Franciscan friar and a genealogist who based a genealogical numbering system of ancestors on the [[#ahnentafel|Ahnentafel]] numbering system first published by Michaël Eytzinger. Sosa's 1676 work ''[https://books.google.com/books/about/Noticia_de_la_gran_casa_de_los_Marqueses.html?id=-rmUgOlIdQQC Noticia de la gran casa de los marqueses de Villafranca]'' established a standard. | ||
+ | |||
+ | The system was popularized on a large scale by [https://wikipedia.org/wiki/Stephan_Kekul%C3%A9_von_Stradonitz Stephan Kekulé von Stradonitz] (1863–1933) when he published his interpretation of Eytzinger's and Sosa's method in his ''[https://books.google.com/books/about/Ahnentafel_Atlas.html?id=WlgoPQAACAAJ Ahnentafel-Atlas: Ahnentafeln zu 32 Ahnen der Regenten Europas und ihrer Gemahlinnen]'', 1898–1904, containing 79 charts of the sovereigns of Europe and their wives. (In 1895, Kekulé's prominent organic chemist father was ennobled by Kaiser Wilhelm II of Germany, giving him the right to add "von Stradonitz" to his name, referring to a possession of his patrilineal ancestors in Stradonice, Bohemia.) | ||
====External Links==== | ====External Links==== | ||
− | + | * [https://wikipedia.org/wiki/Genealogical_numbering_systems#Ahnentafel Sosa-Stradonitz] on Wikipedia | |
− | * [https:// | + | </span></span></span> |
− | </span><span id="d'aboville"> | + | {{-}} |
+ | <span id="d'aboville"> | ||
==d'Aboville== | ==d'Aboville== | ||
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====External Links==== | ====External Links==== | ||
− | * [http:// | + | * [http://wikipedia.org/wiki/Genealogical_numbering_systems#d.27Aboville_System d'Aboville-style numbering] |
</span><span id="de villiers"> | </span><span id="de villiers"> | ||
==de Villiers== | ==de Villiers== | ||
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</span><span id="henry"> | </span><span id="henry"> | ||
==Henry== | ==Henry== | ||
− | [[File:HenrySystem1935.png|thumb|right|300px|Fig. {{#var:chapter}}.{{#vardefineecho:figure|{{#expr:{{#var:figure}}+1}}}} Numbering System example from R.B.Henry's ©1935 book]]The '''<span id="henry">Henry System</span>''' is a descending system created by Reginald Buchanan Henry (1881-1969) created a numbering system assigning a number for his 1935 book, <i>[https://catalog.hathitrust.org/Record/005802323 Genealogies of the Families of the Presidents.]</i> In the original book, each USA President began a new section as was a Progenitor. So they restated the generation count of the list. The President was #1 only if they were a firstborn child. Otherwise, the first digit indexing number was equal to that President's birth order. The progenitor's offspring would be Generation 2 and appended a birth order digit to the index in the 2nd place. | + | [[File:HenrySystem1935.png|thumb|right|300px|Fig. {{#var:chapter}}.{{#vardefineecho:figure|{{#expr:{{#var:figure}}+1}}}} Numbering System example from R.B.Henry's ©1935 book]]A descendant numbering system that assigns a birth-order digit for each successive generation since an arbitrary progenitor. |
+ | |||
+ | |||
+ | The '''<span id="henry">Henry System</span>''' is a descending system created by Reginald Buchanan Henry (1881-1969) created a numbering system assigning a number for his 1935 book, <i>[https://catalog.hathitrust.org/Record/005802323 Genealogies of the Families of the Presidents.]</i> In the original book, each USA President began a new section as was a Progenitor. So they restated the generation count of the list. The President was #1 only if they were a firstborn child. Otherwise, the first digit indexing number was equal to that President's birth order. The progenitor's offspring would be Generation 2 and appended a birth order digit to the index in the 2nd place. | ||
Most notations in the Henry System are a modern reincarnation. In the (outmoded) original Henry System, if there were more than 9 children, the tenth child is given the letter 'X' (in deference to X meaning ten in the Roman Numeral system) and the eleventh child starts alphabetical substitutions with letters A through V. So a 4 digit index of '''64B3''' would be a child of the fourth generation. That descendant would be described as the 3rd child of the 12th child of the 4th child of the progenitor. And the progenitor was 6th born in their family. The modern Henry System is adapted to computerized sorting and ignores the preconception of the Roman Numeral system. It extends the [https://wikipedia.org/wiki/Hexadecimal Hexadecimal] numeral system scheme and starts the substitution with 'A' for ten. In the modern Henry system, the '''64B3''' would have an 11th born child in the 3rd generation spot. | Most notations in the Henry System are a modern reincarnation. In the (outmoded) original Henry System, if there were more than 9 children, the tenth child is given the letter 'X' (in deference to X meaning ten in the Roman Numeral system) and the eleventh child starts alphabetical substitutions with letters A through V. So a 4 digit index of '''64B3''' would be a child of the fourth generation. That descendant would be described as the 3rd child of the 12th child of the 4th child of the progenitor. And the progenitor was 6th born in their family. The modern Henry System is adapted to computerized sorting and ignores the preconception of the Roman Numeral system. It extends the [https://wikipedia.org/wiki/Hexadecimal Hexadecimal] numeral system scheme and starts the substitution with 'A' for ten. In the modern Henry system, the '''64B3''' would have an 11th born child in the 3rd generation spot. | ||
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The '''Modified Henry system''' assumes a substitution scheme is too confusing. Instead, it uses parenthetical numbers if more than 9 offspring were in a generation. So, the modern Henry system example '''64B3''' (from the section above) would be represented as '''64(11)3''' in the Modified Henry system. | The '''Modified Henry system''' assumes a substitution scheme is too confusing. Instead, it uses parenthetical numbers if more than 9 offspring were in a generation. So, the modern Henry system example '''64B3''' (from the section above) would be represented as '''64(11)3''' in the Modified Henry system. | ||
====External Links==== | ====External Links==== | ||
− | * [http:// | + | * [http://wikipedia.org/wiki/Genealogical_numbering_systems#Henry_System Henry-style numbering] |
{{-}} | {{-}} | ||
<span id="meurgey de tupigny"> | <span id="meurgey de tupigny"> | ||
==Meurgey de Tupigny== | ==Meurgey de Tupigny== | ||
− | A descendant | + | A descendant numbering system that assigns Roman numerals to generations, and then appends family subgroup birth order Arabic numbers with a hyphen. Listed in outline form, normally in conjunction with pedigree charts. |
Developed in France by Jacques Meurgey de Tupigny <small>1891-1973</small> for single surname studies and hereditary nobility line studies. Initially published in the 1956 ''[https://www.worldcat.org/title/guide-des-recherches-genealogiques-aux-archives-nationales/oclc/1154449814&referer=brief_results Guide des recherches généalogiques aux Archives nationales.]'' | Developed in France by Jacques Meurgey de Tupigny <small>1891-1973</small> for single surname studies and hereditary nobility line studies. Initially published in the 1956 ''[https://www.worldcat.org/title/guide-des-recherches-genealogiques-aux-archives-nationales/oclc/1154449814&referer=brief_results Guide des recherches généalogiques aux Archives nationales.]'' | ||
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− | + | <span id="NGSQ"><span id="modified register"> | |
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− | < | ||
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==Modified Register== | ==Modified Register== | ||
<span id="Register">''Also known as</span></span> the NGSQ (National Genealogical Society Quarterly) system</span>, "Record System" or the "Modified Register System"'' | <span id="Register">''Also known as</span></span> the NGSQ (National Genealogical Society Quarterly) system</span>, "Record System" or the "Modified Register System"'' | ||
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The big difference between the NGSQ and the Register Systems is that the Record (Modified Register) System only assign a new number for progeny that list descendants later in the index. The NGSQ System assigns a number to every child, whether or not that child is known to have progeny. | The big difference between the NGSQ and the Register Systems is that the Record (Modified Register) System only assign a new number for progeny that list descendants later in the index. The NGSQ System assigns a number to every child, whether or not that child is known to have progeny. | ||
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====External Links==== | ====External Links==== | ||
− | * [http:// | + | * [http://wikipedia.org/wiki/Genealogical_numbering_systems#Register_System Register-style numbering] |
* Record System (Modified Register System) | * Record System (Modified Register System) | ||
* NGSQ System (Modified Register System) [https://wikipedia.org/wiki/National_Genealogical_Society National Genealogical Society Quarterly] | * NGSQ System (Modified Register System) [https://wikipedia.org/wiki/National_Genealogical_Society National Genealogical Society Quarterly] | ||
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</span> | </span> | ||
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==Other numbering systems== | ==Other numbering systems== | ||
* Ancestral Lines | * Ancestral Lines | ||
* [http://www.axtellfamily.org/axgenea/axnumber.html Axtell Genealogy]--Numbering System | * [http://www.axtellfamily.org/axgenea/axnumber.html Axtell Genealogy]--Numbering System | ||
* [https://geneawiki.com/index.php/Num%C3%A9rotation Beruck] numbering • [https://beruckcarpentier.kanak.fr/t2-la-numrotation-beruck Christophe Beruck] | * [https://geneawiki.com/index.php/Num%C3%A9rotation Beruck] numbering • [https://beruckcarpentier.kanak.fr/t2-la-numrotation-beruck Christophe Beruck] | ||
− | * Dollarhide System • [http://www.dollarhide.org/page_billw.htm William "Bill" W. Dollarhide] (1942- ) | + | * Dollarhide System • [https://web.archive.org/web/20200124070807/http://www.dollarhide.org/page_billw.htm William "Bill" W. Dollarhide] (1942- ) |
* [https://www.forkheim.ca/family/num1.html Forkheim's Numbering System] | * [https://www.forkheim.ca/family/num1.html Forkheim's Numbering System] | ||
* GENMTD-L: Numbering System? | * GENMTD-L: Numbering System? | ||
* [https://www.knotsystem.dk/defined.html Knot System Sequential] | * [https://www.knotsystem.dk/defined.html Knot System Sequential] | ||
− | * Yet Another Genealogy Numbering System | + | * Yet [https://web.archive.org/web/20150110155144/http://timforsythe.com/blog/yet-another-genealogy-numbering-system/ Another Genealogy Numbering System (ANGUS)] • a non-persistent indexing system for computers by Tim Forsythe |
===Hybrid Approaches=== | ===Hybrid Approaches=== | ||
*[https://www.familysearch.org/wiki/en/Genealogy_Numbering_Systems_(National_Institute)National Institute for Genealogical Studies] approach • FamilySearch | *[https://www.familysearch.org/wiki/en/Genealogy_Numbering_Systems_(National_Institute)National Institute for Genealogical Studies] approach • FamilySearch | ||
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==Development Resources== | ==Development Resources== | ||
* Add a 'numbering' data class - Gramps feature request {{bug|0004169}} | * Add a 'numbering' data class - Gramps feature request {{bug|0004169}} | ||
+ | * Show [[Genealogical_Numbering_Systems#kekule|Kekule]] numbering in different views- Gramps feature request {{bug|0007955}} ''(a functional enhancement has been stalled in code review since 2017)'' | ||
* [[PseudonymTree.gramps]] - example (gzip compressed) multi-generational Gramps format Tree that uses intuitive pseudonyms & IDs for testing & exploration use. | * [[PseudonymTree.gramps]] - example (gzip compressed) multi-generational Gramps format Tree that uses intuitive pseudonyms & IDs for testing & exploration use. | ||
[[Category:Genealogy|G]] | [[Category:Genealogy|G]] |
Revision as of 03:42, 17 September 2022
A multitude of Genealogical Numbering Systems have been developed for indexing family trees and pedigree charts in text format. Each system provides a consistent method to determine the appropriate & predictable identifier for persons in a Family Tree.
Most systems assign identifiers relative to a focal person and are oriented towards Ancestors (an ascending system) or Descendants (a descending system).
The terminology used to refer to this focal person varies, including: subject, proband (from psychiatry & medical genetics; proposito for male proband or proposita for female proband), root node (graphing), progenitor/primogenitor (for descending genealogical numbering systems), de cujus (Latin term meaning 'about which').
Contents
Genealogical Numbering System Support
Reports | Descendant Systems | Ancestor Systems | |||||||
---|---|---|---|---|---|---|---|---|---|
Simple numbering |
d'Aboville | de Villiers (Pama) |
Henry | Modified Henry |
Meurgey de Tupigny |
Modified Register |
Ahnentafel | Sosa-Stradonitz | |
Graphs:Hourglass Graph | ✔ | ||||||||
Charts Fan Chart | Ordering Only |
||||||||
Graphical Reports:Descendants Lines | ✔ | ||||||||
Text Reports:Ahnentafel Report | ✔ | ||||||||
Text Reports:Detailed Ancestral Report | ✔ | ||||||||
Text Reports:Descendant Report | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | |||
Text Reports:Detailed Descendant Report | ✔ | ✔ | ✔ | ||||||
Web Pages:Descendant Indented Tree | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | |||
Simple numbering
Ahnentafel Numbering System
(German for "ancestor table") A tabular layout of genealogical data using an ascending system for numbering pedigree ancestors starting with '1' at a focal person. The number of the father is double that of the child. The mother is double the child's number plus one.
Origin
An Austrian nobleman, diplomat, historian, and publicist named Michaël Eytzinger (circa 1530-1598) introduced a new functional theory of numeration of ancestors in 1590 with the Cologne publication of the Thesaurus principum hac aetate in Europa viventium ("lexicon of officials in this age in Europe living"). The Ahnentafel (German for "ancestor table") was first illustrated with a 5 generation pedigree of Henry III of France on pages 146 and 147.
External Links
- Ahnentafel Wikipedia
- Genealogical Numbering Systems:Ahnentafel Wikipedia
- Ahnen Chaos -
Sosa-Stradonitz
Also called the Kekulé (Kekule) numbering system
Origin
Spanish Genealogist Jerónimo de Sosa was a 17th-century Spanish Franciscan friar and a genealogist who based a genealogical numbering system of ancestors on the Ahnentafel numbering system first published by Michaël Eytzinger. Sosa's 1676 work Noticia de la gran casa de los marqueses de Villafranca established a standard.
The system was popularized on a large scale by Stephan Kekulé von Stradonitz (1863–1933) when he published his interpretation of Eytzinger's and Sosa's method in his Ahnentafel-Atlas: Ahnentafeln zu 32 Ahnen der Regenten Europas und ihrer Gemahlinnen, 1898–1904, containing 79 charts of the sovereigns of Europe and their wives. (In 1895, Kekulé's prominent organic chemist father was ennobled by Kaiser Wilhelm II of Germany, giving him the right to add "von Stradonitz" to his name, referring to a possession of his patrilineal ancestors in Stradonice, Bohemia.)
External Links
- Sosa-Stradonitz on Wikipedia
d'Aboville
External Links
de Villiers
Also called the Pama numbering system
A descendant numbering numbering system that assigns letters to generations, and then appends family subgroup birth order numbers. Listed in outline form with a concatenated form used for inline references to the list. In concatenated form, the generations are separated by a decimal point.
Developed in South Africa by Christoffel Coetzee de Villiers 1850-1887 for use in the 1894 posthumous Geslachtregister der Oude Kaapsche Familien. Refined by Dr. Cornelis "Cor" Pama 1916-1994 for the 1966 translation, Genealogies of Old Cape Families.
Henry
A descendant numbering system that assigns a birth-order digit for each successive generation since an arbitrary progenitor.
The Henry System is a descending system created by Reginald Buchanan Henry (1881-1969) created a numbering system assigning a number for his 1935 book, Genealogies of the Families of the Presidents. In the original book, each USA President began a new section as was a Progenitor. So they restated the generation count of the list. The President was #1 only if they were a firstborn child. Otherwise, the first digit indexing number was equal to that President's birth order. The progenitor's offspring would be Generation 2 and appended a birth order digit to the index in the 2nd place.
Most notations in the Henry System are a modern reincarnation. In the (outmoded) original Henry System, if there were more than 9 children, the tenth child is given the letter 'X' (in deference to X meaning ten in the Roman Numeral system) and the eleventh child starts alphabetical substitutions with letters A through V. So a 4 digit index of 64B3 would be a child of the fourth generation. That descendant would be described as the 3rd child of the 12th child of the 4th child of the progenitor. And the progenitor was 6th born in their family. The modern Henry System is adapted to computerized sorting and ignores the preconception of the Roman Numeral system. It extends the Hexadecimal numeral system scheme and starts the substitution with 'A' for ten. In the modern Henry system, the 64B3 would have an 11th born child in the 3rd generation spot.
The original book also used an outline form which successively indented for each generation. Although simple to comprehend, the Henry format is not accepted for most genealogical publications.
Modified Henry System
The Modified Henry system assumes a substitution scheme is too confusing. Instead, it uses parenthetical numbers if more than 9 offspring were in a generation. So, the modern Henry system example 64B3 (from the section above) would be represented as 64(11)3 in the Modified Henry system.
External Links
Meurgey de Tupigny
A descendant numbering system that assigns Roman numerals to generations, and then appends family subgroup birth order Arabic numbers with a hyphen. Listed in outline form, normally in conjunction with pedigree charts.
Developed in France by Jacques Meurgey de Tupigny 1891-1973 for single surname studies and hereditary nobility line studies. Initially published in the 1956 Guide des recherches généalogiques aux Archives nationales.
Modified Register
Also known as the NGSQ (National Genealogical Society Quarterly) system, "Record System" or the "Modified Register System" Descendant Numbering System
created in 1870 for use in the New England Historical and Genealogical Register (NEHGR) published by the New England Historic Genealogical Society. Adopted with a NGSQs
The big difference between the NGSQ and the Register Systems is that the Record (Modified Register) System only assign a new number for progeny that list descendants later in the index. The NGSQ System assigns a number to every child, whether or not that child is known to have progeny.
External Links
- Register-style numbering
- Record System (Modified Register System)
- NGSQ System (Modified Register System) National Genealogical Society Quarterly
Other numbering systems
- Ancestral Lines
- Axtell Genealogy--Numbering System
- Beruck numbering • Christophe Beruck
- Dollarhide System • William "Bill" W. Dollarhide (1942- )
- Forkheim's Numbering System
- GENMTD-L: Numbering System?
- Knot System Sequential
- Yet Another Genealogy Numbering System (ANGUS) • a non-persistent indexing system for computers by Tim Forsythe
Hybrid Approaches
- Institute for Genealogical Studies approach • FamilySearch
Comparative References
Articles comparing & contrasting merits of competing numbering sysytems
- Numbering Systems In Genealogy • Richard "Dick" Allen Pence 1932-2009
- Genealogical numbering systems • Wikipedia
Development Resources
- Add a 'numbering' data class - Gramps feature request 0004169
- Show Kekule numbering in different views- Gramps feature request 0007955 (a functional enhancement has been stalled in code review since 2017)
- PseudonymTree.gramps - example (gzip compressed) multi-generational Gramps format Tree that uses intuitive pseudonyms & IDs for testing & exploration use.