Michelle was the daughter of Denis de Saubonne but her mother is unknown. The date and place of her birth have not been found.
Her husband was Jean IV de Parthenay-l'Archevêque, who she married in 1499. The place has not been found. Their five known children were Anne (?-?), Renée (?-?), Charlotte (?-?), Artus (?-?) and Jean V (1512-1566).