page_title: Family tree
section_title: Ahnentafel
hierarchical_section_title: Family tree / Family history representations / Ahnentafel
caption_attribution_description: Čeština: Vývod pro Zikmunda Kryštofa von Waldburg-Zeil-Trauchburg Deutsch: Ahnentafel des Sigmund Christoph Graf von Waldburg-Zeil-Trauchburg, Domherr in Konstanz seit 1776. Badisches Generallandesarchiv Karlsruhe 73/IX. English: The family tree of Sigmund Christoph von Waldburg-Zeil-Trauchburg Español: El árbol genealógico de Sigmund Christoph von Waldburg-Zeil-Trauchburg Русский: Генеалогическое древо Зигмунда Кристофа фон Вальдбург-Цайль-Траухбурга, князя-епископа Кимзе
context_page_description: A family tree, or pedigree chart, is a chart representing family relationships in a conventional tree structure. The more detailed family trees used in medicine and social work are known as genograms.
context_section_description: An ahnentafel (German for "ancestor table") is a genealogical numbering system for listing a person's direct ancestors in a fixed sequence of ascent: 
  Subject (or proband)
  Father
  Mother
  Paternal grandfather
  Paternal grandmother
  Maternal grandfather
  Maternal grandmother
  and so on, back through the generations. Apart from No. 1, who can be male or female, all even-numbered persons are male, and all odd-numbered persons are female. In this scheme, the number of any person's father is double the person's number, and a person's mother is double the person's number plus one. This system can be displayed as a tree:
caption: An ahnentafel family tree displaying an ancestor chart of Sigmund Christoph, Graf von Zeil und Trauchburg
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