 Douce was the sole child of the Provençal count Ramon Berenguer II and the Castilian queen dowager Richeza of Poland, who married in 1162.In 1165, with the treaty signed in Beaucaire, Ramon Berenguer betrothed his infant daughter to Raymond, eldest son and heir apparent of Raymond V, ruler of the neighbouring County of Toulouse.When Ramon Berenguer died trying to conquer Nice in the spring of 1166, Douce inherited the County of Provence.