What are Ancestor numbers (or Ahnentafel numbers)?
Ancestor, or Ahnentafel numbers are a way of numbering the direct ancestors in a family tree. There’s a simple rule for working out the numbers – take the number of anybody in the tree and double it to find the number for their father, or double it and add 1 to give the number of their mother. However you don’t need to work out the numbers – we’ve drawn for you a blank Ancestor Chart which shows the numbers against each ancestor. All you need to do is print it out and write in the names of your ancestors.
