List of 25 ancestors found in 40 iterations (23 distinct persons and 25 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)
Generation 4 - 4 person(s) on 16 (4 distinct persons)
Generation 5 - 6 person(s) on 32 (6 distinct persons)
32Guillaume Lefebvre (1310-1372)
33Jeanne de Bourgon (1320-)
34Jean Le Fébvre (~1300-1361)
35? De Grainlhéville (~1302-)
40Colas Le Berseur (~1380-)
41Marguerite de Chanteloup (~1380-)
Generation 6 - 6 person(s) on 64 (4 distinct persons)