List of 15 ancestors found in 40 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 - 4 person(s) on 4 (4 distinct persons)
Generation 3 - 4 person(s) on 8 (4 distinct persons)
Generation 4 - 4 person(s) on 16 (4 distinct persons)
16Charles Geradon (~1720-21/12/1791)
17Anne Favereau (1718-24/08/1787)
26Martin-Ignace Simar (26/09/1734-10/04/1795)
27Gertrude Ernst (17/04/1746-09/05/1782)