List of 21 ancestors found in 40 iterations (21 distinct persons and 21 positions into tree)

Generation 0 - 1 person(s) on 1 (1 distinct persons)
1Blanche de Montcavrel (1093-1146)
Generation 1 - 2 person(s) on 2 (2 distinct persons)
2Gauthier Ier de Montcavrel (16/04/1058-25/01/1114)
3Justine de Boulogne (10/02/1055-1116)
Generation 2 - 2 person(s) on 4 (2 distinct persons)
6Lambert de Boulogne (1022-)
7Adélaïde de Normandie (1030-~1085)
Generation 3 - 2 person(s) on 8 (2 distinct persons)
12Eustache de Boulogne (~0995-1049)
13Mahaut de Louvain (~0992-1059)
Generation 4 - 2 person(s) on 16 (2 distinct persons)
26Lambert Ier de Louvain (0965-12/09/1015)
27Gerberge de Basse Lotharingie (0970-27/01/1018)
Generation 5 - 2 person(s) on 32 (2 distinct persons)
52Régnier III de Hainaut de Mons (0920-0973)
53Adélaïde de Dagsbourg de Louvain (0930-0969)
Generation 6 - 2 person(s) on 64 (2 distinct persons)
104Régnier II de Hainaut (~0882-0932)
105Adélaïde de Bourgogne (~0889-)
Generation 7 - 2 person(s) on 128 (2 distinct persons)
208Régnier Ier au Long Col de Hainaut (25/10/0860-19/01/0915)
209Albérade de Lorraine (0862-24/01/0919)
Generation 8 - 2 person(s) on 256 (2 distinct persons)
418Charles II de France (13/06/0823-0877)
419Ermentrude d'Orléans (04/0825-0869)
Generation 9 - 2 person(s) on 512 (2 distinct persons)
836Louis Ier le Pieux de France (16/04/0778-20/06/0840)
837Judith de Bavière (0805-19/04/0843)
Generation 10 - 2 person(s) on 1024 (2 distinct persons)
1672Charlemagne de France (02/04/0747-28/01/0814)
1673Hildegarde von Vintzgau (~0757-26/04/0783)