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)
1Charles de Monge (24/02/1754-1827)
Generation 1 - 2 person(s) on 2 (2 distinct persons)
2Alexandre de Monge (12/01/1698-10/09/1781)
3Marie-Pauline de Franeau (1722-1781)