[1] On 19 June 1698 he married Anne Marie Beuzelen de Bosmelet (1668–1752), daughter of Jean Beuzelen, seigneur de Bosmelet and Renée Bouthillier,[2] and by her had four daughters, none of whom survived childhood:[2] The Museum of Fine Arts, Rouen, calls Anne Marie's painting of 1714, by François de Troy, who is taking a peach from a tray presented by a child, as "one of the masterpieces".

It notes certain rules of the late critic and painter Roger de Piles were closely followed.

[1] He also held the titles of comte de Mussidan, baron de Castelnau, Caumont, Tunneins, Samazin, Feuillet, Taillebourg, Boësse, Cugnac, Roquepine, Maduran and la Boulaye.

[1] In 1712 La Force was a founder and the first patron of the Académie Nationale des Sciences, Belles–Lettres et Arts de Bordeaux.

[4] He became a member of the Académie française in 1715, replacing Fabio Brulart de Sillery.