Guillaume II de Fiennes

✓ Guillaume II, seigneur de Fiennes (killed at the battle of Courtrai, 11 Jul 1302), eldest son of Enguerrand II de Fiennes and Isabelle de Conde (Jean d'Acre's charter of Feb 1266/67 to 'monseigneur Enguerran seigneur de Fieules el nom de Guillaume son aisne fils mary damoiselle Blanche nostre fille'); m. 1266/67 Blanche de Brienne. Father of Marguerite, wife of Edmund I de Mortimer ('Margaretam filiam domini Willielmi de Fendles', Wigmore narrative). RING 20 Oct 2026 into Enguerrand II x Isabelle de Conde (F100090). Source: Medieval Lands (fmg.ac, Cawley), 'Northern France' (Fiennes). [DIRECT ANCESTOR OF THE COMPILER: flag added 20 Oct 2026 by walking the tree from Aynsley, so that this marker is reliable and can be searched.]