[1][2] He grew up at the Hôtel de Gueydan, located at 22 on the Cours Mirabeau.

[3] He was baptised as a Roman Catholic in the Église de la Madeleine in Aix.

[1][2] His grandfather Gaspard Gueidan (1616-1697), married to Catherine Brémond, purchased a position at the Court of Finances, thus becoming a member of the French aristocracy.

[6] He entered the Parlement of Aix-en-Provence, where he served as Advocate General, protecting the concerns of the elite.

After his death, she donated the Château de Valabre to the city of Gardanne.