List of 21 ancestors found in 30 iterations (21 distinct persons and 21 positions into tree)

Generation 0 - 1 person(s) on 1 (1 distinct persons)
Generation 1 - 2 person(s) on 2 (2 distinct persons)
Generation 2 - 4 person(s) on 4 (4 distinct persons)
4Joseph Bertrand (~1869-)
5Berthe Duguet (~1871-12/12/1965)
6Alexandre Marchand (06/09/1868-)
7Gabrielle Facq (29/10/1869-)
Generation 3 - 6 person(s) on 8 (6 distinct persons)
Generation 4 - 2 person(s) on 16 (2 distinct persons)
Generation 5 - 4 person(s) on 32 (4 distinct persons)
Generation 6 - 2 person(s) on 64 (2 distinct persons)