List of 3 ancestors found in 40 iterations (3 distinct persons and 3 positions into tree)

Generation 0 - 1 person(s) on 1 (1 distinct persons)
1Gaucher II de Therouanne (~0978-~1029)
Generation 1 - 2 person(s) on 2 (2 distinct persons)
2Gaucher Ier de Therouanne (~0941-~0998)
3Aldegonde de Nesle (~0958-~1011)