Robert the Strong
The Carolingian king of the Franks, Charles the Bald, re-created the Breton March in 861 and appointed Robert the Strong margrave. In 863, Charles negotiated the Treaty of Entrammes with Salomon, King of Brittany whereby western Anjou was recognised as a part of Brittany and the lay abbacy of Saint-Aubin in Angers was granted to Salomon, who commended himself to Charles and paid tribute.