| William V | |
|---|---|
| Duke of Aquitaine | |
| Reign | 990 − 31 January 1030 |
| Predecessor | William IV, Duke of Aquitaine |
| Successor | William VI, Duke of Aquitaine |
| Born | 969 Poitiers |
| Died | 31 January 1030 Maillezais Cathedral |
| Burial | Maillezais Cathedral |
| Spouse | Adalemode of Limoges Brisque of Gascony Agnes of Burgundy |
| Issue | William VI, Duke of Aquitaine Odo of Gascony William VII, Duke of Aquitaine William VIII, Duke of Aquitaine Agnes of Poitou |
| House | Ramnulfids |
| Father | William IV, Duke of Aquitaine |
| Mother | Emma of Blois |
William the Great (French: Guillaume le Grand; 969 – 31 January 1030) was duke of Aquitaine (as William V) and count of Poitou (as William II or III) from 990 until his death.[1] Upon the death of the emperor Henry II, he was offered the kingdom of Italy but declined to contest the title against Conrad II.