List of 25 ancestors found in 40 iterations (25 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 - 4 person(s) on 4 (4 distinct persons)
Generation 3 - 6 person(s) on 8 (6 distinct persons)
Generation 4 - 8 person(s) on 16 (8 distinct persons)
22Arthur de Beauvois (~0945-1002)
23Isabeau de Boubers (~0953-1004)
24Wauthier II d'Olhain (~0953-1013)
25Blanche d'Hersin (~0964-1003)
28Eustache de Bours (0970-1017)
29Richilde de Wignacourt (~0973-)
30Hughes III de Boulogne dit de Saint Pol (~0978-1028)
31Aldegonde de Saint Pol (~0978-1032)
Generation 5 - 4 person(s) on 32 (4 distinct persons)