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)
1Béatrix de Thérouanne (~1077-)
Generation 1 - 2 person(s) on 2 (2 distinct persons)
2Gaucher III de Thérouanne (~1032-1089)
3Jehanne de Nédonchel (~1051-~1089)
Generation 2 - 2 person(s) on 4 (2 distinct persons)
4Godeffroi de Thérouanne (1005-1060)
5Walburge de Sainte Aldegonde (1015-1059)
Generation 3 - 2 person(s) on 8 (2 distinct persons)
10Huon II de Sainte Aldegonde (~0990-~1046)
11Angèle de Guines (~0997-~1054)
Generation 4 - 2 person(s) on 16 (2 distinct persons)
22Ardulf Ier le Posthume de Guînes (0966-)
23Mathilde de Boulogne (~0970-~1005)
Generation 5 - 2 person(s) on 32 (2 distinct persons)
44Siegfried Ier de Guines (~0905-0972)
45Elftrude de Flandre (~0933-0972)
Generation 6 - 2 person(s) on 64 (2 distinct persons)
88Harald de Danemark (~0900-)
89Gisèle de Lorraine (~0860-25/10/0907)
Generation 7 - 2 person(s) on 128 (2 distinct persons)
178Lothaire II de Germanie (~0835-12/08/0875)
179Waldrade de Wormsgau (0815-08/04/0879)
Generation 8 - 2 person(s) on 256 (2 distinct persons)
356Lothaire Ier de Germanie (0795-29/09/0855)
357Ermengarde de Tours (0804-20/05/0851)
Generation 9 - 2 person(s) on 512 (2 distinct persons)
712Louis Ier le Pieux de France (16/04/0778-20/06/0840)
713Ermengarde de Hesbaye (0780-03/10/0818)
Generation 10 - 2 person(s) on 1024 (2 distinct persons)
1424Charlemagne de France (02/04/0747-28/01/0814)
1425Hildegarde von Vintzgau (~0757-26/04/0783)