He was married to Blanche (Bianca) of Burgundy (daughter of Robert II, Duke of Burgundy) and had a daughter, Joan (Giovanna), who married to John III the Good, duke of Brittany.
He was married to Blanche (Bianca) of Burgundy, daughter of Robert II, Duke of Burgundy and Agnes of France, Duchess of Burgundy. They had a daughter, Joan (Giovanna), who married to John III the Good, duke of Brittany.