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)
Generation 2 - 4 person(s) on 4 (4 distinct persons)
4Alexandre Michaux (~1814-)
5Joséphine Tambour (~1816-)
6Jean-Baptiste Ruelle (~1828-)
7Sophie Urbain (~1830-)