Geoffrey II, Duke of Brittany (b. 1158)
Geoffrey II (Breton: Jafrez; Latin: Galfridus, Anglo-Norman: Geoffroy; 23 September 1158 – 19 August 1186) was Duke of Brittany and 3rd Earl of Richmond between 1181 and 1186, through his marriage with the heiress Constance. Geoffrey was the fourth of five sons of Henry II, King of England and Eleanor, Duchess of Aquitaine.