List of 13 ancestors found in 40 iterations (11 distinct persons and 13 positions into tree)

Generation 0 - 1 person(s) on 1 (1 distinct persons)
1Nicolas Lefebvre (1500-1553)
Generation 1 - 2 person(s) on 2 (2 distinct persons)
2Jean I Lefebvre (~1375-)
3Gilette de Camprond (~1380-)
Generation 2 - 2 person(s) on 4 (2 distinct persons)
4Ferrault Lefebvre (~1343-)
5Robine Lefebvre (~1345-1388)
Generation 3 - 4 person(s) on 8 (4 distinct persons)
8Guillaume Lefebvre (1310-1372)
9Jeanne de Bourgon (1320-)
10Jean Le Fébvre (~1300-1361)
11? De Grainlhéville (~1302-)
Generation 4 - 4 person(s) on 16 (2 distinct persons)
16 (2)Collart Lefebvre (1280-1367)
17 (2)? de Gastenoy (~1282-)
20 (2)Collart Lefebvre (1280-1367)
21 (2)? de Gastenoy (~1282-)