William IX, Count of Poitiers

William was the first son of King Henry II of England and Duchess Eleanor of Aquitaine. He was born in Normandy on the same day that his father's rival, Eustace IV of Boulogne, died.

17 August 1153

Born on the same birth day (17 August): Andriy Kuzmenko • Barry Sheerman • Dave "Snaker" Ray • Davy Crockett • Josef Dobrovský • Lothar Bisky • Mahboob Ali Khan • Maru Teferi • Natalie Sandtorv • Norm Coleman • Phil Jagielka • Philipp II, Count of Hanau-Münzenberg • The Kid Laroi • Theodoros Pangalos (politician) • V. S. Naipaul