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)
1Renier d'Udekem d'Acoz (~1170-05/12/1250)
Generation 1 - 2 person(s) on 2 (2 distinct persons)
2Raes d'Udekem (~1130-)
3Marguerite de Diest (~1142-)