Constance of Brittany

~ Constance, first wife of Geoffroy III de Mayenne, called by Le Baud (16th c.) 'la fille du Duc Conan le Gros de Bretagne'; ~ as mother of Clemence de Mayenne (Richardson's chronological argument that Clemence was of the first marriage). Her father Conan III, Duke of Brittany, not wired. Source: Medieval Lands (fmg.ac, Cawley), 'Maine Nobility (mainnob)'. [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.] CHECKED 25 Oct 2026: Medieval Lands gives her as daughter of Conan III of Brittany and Matilda of England on Europaeische Stammtafeln alone ('not verified'); with her own rung already ~, not wired.