Geoffroy III de Mayenne

✓ Geoffroy III, seigneur de Mayenne (succeeded 1161, d. 1169), eldest son of Juhel I and Clemence de Ponthieu ('Juhello principe Meduane et uxore eius Clementia et filio eorum Gaufrido primogenito', 1128). Father of Juhel II and Clemence (wife of Robert IV de Sable) - Clemence's daughter Marguerite named 'avunculi mei domini Juhelli de Meduana' (1205). 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.]