Facts and Events
Conan IV of Penthièvre (1138 – February 20, 1171), (Breton: Konan V Penteur, and Konan Breizh) called "the Young", was duke of Brittany, from 1156 to 1166. He was the son of Alan the Black, 1st Earl of Richmond and Bertha of Brittany. Conan IV was his father's heir as 2nd Earl of Richmond and his mother's heir as Duke of Brittany. From his father's side, Conan was great great grandson of duke Geoffrey I and great grandson of Odo of Brittany. Conan and his daughter Constance would be the only representatives of the Penthièvre dynasty of Brittany to hold the Duchy's crown.