William des Roches Seneschal of Anjou

✓ William (Guillaume) des Roches (c.1160-1222), Seneschal of Anjou, Maine and Touraine; knight of Henry II and Richard I and crusader; changed sides to Philip Augustus in 1202 after Arthur of Brittany's capture; victor with Prince Louis at La Roche-aux-Moines 1214; m. 1201 Marguerite de Sable, heiress of Sable. Father of Clemence (wife of Geoffroy VI de Chateaudun). Origins unknown (perhaps of Chateau-du-Loir). Sources: Wikipedia 'William des Roches' (Baldwin; Power; Powicke; ODNB); Medieval Lands, 'Chartres & Chateaudun' (charter of 1250). [DIRECT ANCESTOR OF THE COMPILER: flag added 22 Oct 2026 by walking the tree from Aynsley, so that this marker is reliable and can be searched.]