This icicle tree uses the Ahnentafel numbering system, which is a genealogical method that allows for the numbering of ancestors beginning with a descendant.

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 schema, 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.

For instance, the number of Joseph Ribant is 8, so his father is 16, and his mother is 17.

On mouse over, data is presented for each ancestor as follows:

Ahnentafel number, year of birth, place of birth, year of death, place of death