List of 11 ancestors found in 40 iterations (9 distinct persons and 11 positions into tree)

Generation 0 - 1 person(s) on 1 (1 distinct persons)
1Jean I Lefebvre (~1375-)
Generation 1 - 2 person(s) on 2 (2 distinct persons)
2Ferrault Lefebvre (~1343-)
3Robine Lefebvre (~1345-1388)
Generation 2 - 4 person(s) on 4 (4 distinct persons)
4Guillaume Lefebvre (1310-1372)
5Jeanne de Bourgon (1320-)
6Jean Le Fébvre (~1300-1361)
7? De Grainlhéville (~1302-)
Generation 3 - 4 person(s) on 8 (2 distinct persons)
8 (2)Collart Lefebvre (1280-1367)
9 (2)? de Gastenoy (~1282-)
12 (2)Collart Lefebvre (1280-1367)
13 (2)? de Gastenoy (~1282-)