The youngest son of Louis VIII of France and Blanche of Castile, Charles was destined for a Church career until the early 1240s. He acquired Provence and Forcalquier through his marriage to their heiress, Beatrice. His attempts to restore central authority brought him into conflict with his mother-in-law, Beatrice of Savoy, and the nobility. Charles received Anjou and Maine from his brother, Louis IX of France, in appanage. He accompanied Louis during the Seventh Crusade to Egypt. Shortly after he returned to Provence in 1250, Charles forced three wealthy autonomous citiesMarseilles, Arles and Avignonto acknowledge his suzerainty.