List of 7 ancestors found in 40 iterations (7 distinct persons and 7 positions into tree)

Generation 0 - 1 person(s) on 1 (1 distinct persons)
Generation 1 - 2 person(s) on 2 (2 distinct persons)
2François Lefèvre (~1770-31/12/1859)
3Marie-Thérèse Berger (~1775-06/02/1849)
Generation 2 - 4 person(s) on 4 (4 distinct persons)