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)
1Thierry II d'Altena (~1120-~1189)
Generation 1 - 2 person(s) on 2 (2 distinct persons)
2Dietrich d'Altena (~1105-1172)
3Adèle Berthout (~1090-)