Guy XI de Laval

Guy XI de Laval (c. 1316–1348), eldest son of Guy X and Béatrix of Brittany, held his inheritance for little more than a year. In 1338 his father married him to Isabeau, heiress of Craon.

On 18 June 1347 he fought beside his father at La Roche-Derrien, where Guy X was killed and Charles of Blois was taken; Guy XI was captured by the English as well, and his mother arranged the ransom.

He died at the Château de Vitré on 22 September 1348, never having recovered from his wounds, and was buried beside his father. He left no children, and his brother succeeded him as Guy XII.