List of 15 ancestors found in 40 iterations (15 distinct persons and 15 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 - 2 person(s) on 4 (2 distinct persons)
Generation 3 - 4 person(s) on 8 (4 distinct persons)
12LĂ©onard d'Angres (~1005-)
13Berthe d'Ack (~1021-)
14Gaucher de Beuvry (~1021-1078)
15Havoise de Merville (~1035-1097)
Generation 4 - 2 person(s) on 16 (2 distinct persons)
Generation 5 - 2 person(s) on 32 (2 distinct persons)
Generation 6 - 2 person(s) on 64 (2 distinct persons)