List of 15 ancestors found in 30 iterations (15 distinct persons and 15 positions into tree)

Generation 0 - 1 person(s) on 1 (1 distinct persons)
Generation 1 - 2 person(s) on 2 (2 distinct persons)
Generation 2 - 2 person(s) on 4 (2 distinct persons)
Generation 3 - 4 person(s) on 8 (4 distinct persons)
Generation 4 - 4 person(s) on 16 (4 distinct persons)
24Jean d'Harveng (~1580-04/1630)
25Waudru Coust (~1580-)
26Nestor Pasture (1580-)
27Marie Mathieu (1590-)
Generation 5 - 2 person(s) on 32 (2 distinct persons)