Rainier III, Prince of Monaco
She is the daughter of Count Guy de Jacquelot du Boisrouvray (1903-1980) and Luz Mila Patiño Rodríguez (1909-1958) (her name is also reported as Luzmila). Her paternal grandmother was born countess Joséphine Marie Louise de Polignac, sister of Prince Pierre, Duke of Valentinois, the maternal grandfather of Rainier III, Prince of Monaco. Her maternal grandfather was Simón Patiño, one of the wealthiest men in the world at the time of her birth.