List of 7 ancestors found in 40 iterations (7 distinct persons and 7 positions into tree)

Generation 0 - 1 person(s) on 1 (1 distinct persons)
1Gérard Ier de Werchin (~1160-1246)
Generation 1 - 2 person(s) on 2 (2 distinct persons)
2Guillaume de Werchin (~1130-1219)
3Mahaut de Lalaing (~1160-)
Generation 2 - 2 person(s) on 4 (2 distinct persons)
6Gérard II de Forest (1137-1187)
7Adèlaïde de Râches (1139-)
Generation 3 - 2 person(s) on 8 (2 distinct persons)
12Gérard Ier de Forest et de Lalaing (1109-)
13Jeanne van Halewijn (1121-1172)