Jean was the son of Olivier de Campion de la Grenterie but his mother is unknown. The date and place of his birth have not been found.
Jean de Campion de la Grenterie
Olivier de Campion de la Grenterie (1427-?)
Pierre de Campion de la Grenterie
Jean II de Campion de la Corbelière et du Péray (-1457)