What is William IX, Count of Poitiers?
{{Infobox royalty | name = William IX | succession = [[Count of Poitiers]] | image = | caption = The children of Henry II, William is the first on the left. | reign = 17 August 1153 – 1156 | house = [[House of Plantagenet]] | father = [[Henry II of England]] | mother = [[Eleanor of Aquitaine]] | birth_date = {{Birth date|1153|8|17|df=yes}} | birth_place = [[Normandy]], [[France]] | death_date = 1156 (aged 2/3) | death_place = [[Wallingford Castle]], [[Berkshire]] | burial_place = [[Reading Abbey]], Berkshire }} '''William IX''' (17 August 1153 - April/December 1156) was the eldest son of [[Henry II of England]]. He was heir to the throne from his birth to his death in 1156. {{DEFAULTSORT:William 09, Count of Poitiers}} [[Category:1153 births]] [[Category:1156 deaths]] [[Category:House of Plantagenet]] {{bio-stub}}