William IX, Count of Poitiers
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| William IX | |
|---|---|
| Born | August 17, 1153 Normandy |
| Died | c. April 1156 Wallingford Castle |
William IX (August 17, 1153 - April 1156/December 1156) was Count of Poitiers from 1153 until his death, he died aged 2 or 3 after a seizure.