William, Count of Poitiers (17 August 1153 â 1156) was the first son of King Henry II of England and Duchess Eleanor of Aquitaine.
William is reported to have died either at the age of 2 in April 1156, or at the age of 3 on 2 December 1156, after suffering a seizure at Wallingford Castle. He was buried in Reading Abbey at the feet of his great-grandfather Henry I.