List of 9 ancestors found in 30 iterations (9 distinct persons and 9 positions into tree)

Generation 0 - 1 person(s) on 1 (1 distinct persons)
1Béatrice de Nivelles (1190-09/08/1215)
Generation 1 - 2 person(s) on 2 (2 distinct persons)
2Roger II de Gand (~1145-1198)
3Béatrice de Nivelles (~1145-1215)
Generation 2 - 2 person(s) on 4 (2 distinct persons)
4Roger II de Courtrai (1120-1190)
5Sarah de Lille (1125-1162)
Generation 3 - 2 person(s) on 8 (2 distinct persons)
10Roger II de Lille (1076-~1130)
11? de Phalempin (~1097-)
Generation 4 - 2 person(s) on 16 (2 distinct persons)
20Roger Ier de Lille (~1050-23/06/1098)
21Ogive de Flandres (~1055-)