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)
1Blanche de Licques (1238-1289)
Generation 1 - 2 person(s) on 2 (2 distinct persons)
2Philippe de Licques (~1200-)
3Marie d'Halluin (~1210-1271)
Generation 2 - 2 person(s) on 4 (2 distinct persons)
4Guillaume de Licques (~1170-)
5Jeanne de Mailly (~1175-)
Generation 3 - 2 person(s) on 8 (2 distinct persons)
8Enguerrand de Licques (~1130-~1187)
9Berthe d'Olhain (~1145-)
Generation 4 - 2 person(s) on 16 (2 distinct persons)
18Wallerand d'Ollehain (~1115-1178)
19Blanche de Bours (~1125-)
Generation 5 - 2 person(s) on 32 (2 distinct persons)
38Louis de Bours (~1100-~1154)
39Jeanne de Rollancourt (~1105-~1159)
Generation 6 - 2 person(s) on 64 (2 distinct persons)
76Robert de Bours (1079-1124)
77Berthe de Bournonville (1083-1132)
Generation 7 - 2 person(s) on 128 (2 distinct persons)
152Hugues de Bours (1056-1108)
153Marthe de Ponthieu (1062-1109)
Generation 8 - 2 person(s) on 256 (2 distinct persons)
306Guy Ier de Ponthieu (~1035-1100)
307Ade d'Amiens (~1050-)
Generation 9 - 2 person(s) on 512 (2 distinct persons)
612Hughes II de Ponthieu (~1014-20/11/1052)
613Berthe d'Aumale (~1015-)
Generation 10 - 2 person(s) on 1024 (2 distinct persons)
1224Enguerrand Ier De Ponthieu (~0995-09/12/1046)
1225Adélaïde de Gand (~0980-)
Generation 11 - 2 person(s) on 2048 (2 distinct persons)
2450Arnulf II de Hollande (~0950-18/09/0993)
2451Luitegarde de Luxembourg (~0953-)
Generation 12 - 2 person(s) on 4096 (2 distinct persons)
4900Thierry II de Hollande (~0925-06/05/0988)
4901Hildegarde de Flandre de Cambrai (0922-12/11/0990)