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)
1Adrienne Dervaux (~1650-)
Generation 1 - 2 person(s) on 2 (2 distinct persons)
2Pierre Dervaux (17/11/1616-)
3Françoise Lefebvre (20/11/1619-02/08/1702)
Generation 2 - 2 person(s) on 4 (2 distinct persons)
6Pierre Lefebvre (~1590-)
7Jeanne Lemettre (~1600-1640)
Generation 3 - 2 person(s) on 8 (2 distinct persons)
12Cornil Lefebvre (~1555-)
13Isabeau Dumoulin (~1560-)
Generation 4 - 2 person(s) on 16 (2 distinct persons)
24Pierre Lefebvre (1525-1601)
25Isabeau Domessans (1525-)
Generation 5 - 2 person(s) on 32 (2 distinct persons)
48Nicolas Lefebvre (1500-1553)
49Cardette Le Berseur (1505-)
Generation 6 - 2 person(s) on 64 (2 distinct persons)
98Thomas Le Berseur (1475-)
99Jeanne de Saint Patrix (~1345-)
Generation 7 - 2 person(s) on 128 (2 distinct persons)
196Robert Le Berseur (~1400-)
197Marie de Bruyères (~1400-)