Misplaced Pages

William IX
William IX, from an early 14th century genealogical tree British Library Royal MS 14 B VI.
Count of Poitiers
Reign	1153–1156
Predecessor	Henry and Eleanor
Successor	Henry and Eleanor
Born	17 August 1153 Normandy, France
Died	1156 (aged 2–3) Wallingford Castle, Berkshire
Burial	Reading Abbey, Berkshire
House	Plantagenet / Angevin
Father	Henry II, King of England
Mother	Eleanor, Duchess of Aquitaine

William (17 August 1153 – 1156) 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.

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.

At the time of his death, William was reigning as Count of Poitiers, as his mother had ceded the county to him. For centuries, the dukes of Aquitaine had held this as one of their minor titles, so it had passed to Eleanor from her father; giving it to her son was effectively a revival of the title, separating it from the duchy. Some authorities say he also held the title of Archbishop of York, but this is probably an error. His half-brother Geoffrey, who was born a year before William, later held that office, which may have been the cause of the confusion.

References

1. Warren 1995, p. 137.
2. ^ Baxter 2016, p. 77.
3. Huscroft 2016, p. 110.
4. Strickland 2007, p. 184.

Sources

• Baxter, Ron (2016). The Royal Abbey of Reading. The Boydell Press.
• Huscroft, Richard (2016). Tales From the Long Twelfth Century: The Rise and Fall of the Angevin Empire. Yale University Press.
• Strickland, Matthew (2007). "On the Instruction of a Prince: The Upbringing of Henry, the Young King". In Harper-Bill, Christopher; Vincent, Nicholas (eds.). Henry II: New Interpretations. The Boydell Press.
• Warren, W. L. (1995). Henry II. University of California Press.

v t e Counts of Poitiers
Guerin Hatton Renaud Bernard I Emenon Ranulf I Ranulf II Gauzbert Robert I Ebalus Aymar Ebalus William I William II William III William IV Eudes William V William VI William VII William VIII Eleanor Louis* Henry* William IX Otto Richard Alphonse Philip John I John II John III Charles François
* Count through marriage

v t e House of Plantagenet
Geoffrey Plantagenet, Count of Anjou Wife: Empress Matilda Henry II of England Geoffrey, Count of Nantes William FitzEmpress Illegitimate: Hamelin de Warenne, Earl of Surrey Emma of Anjou Mary of Shaftesbury
Henry II of England Wife: Eleanor of Aquitaine William IX, Count of Poitiers Henry the Young King Matilda of England, Duchess of Saxony Richard I of England Geoffrey II, Duke of Brittany Eleanor of England, Queen of Castile Joan of England, Queen of Sicily John, King of England Illegitimate: Geoffrey (archbishop of York) William de Longespée, Earl of Salisbury
Henry the Young King Wife: Margaret of France, Queen of England and Hungary William Plantagenet (died in infancy)
Richard I of England Wife: Berengaria of Navarre Illegitimate: Philip of Cognac
John, King of England Wife: Isabella of Angoulême Henry III of England Richard, 1st Earl of Cornwall Joan of England, Queen of Scotland Isabella of England Eleanor of England, Countess of Leicester Illegitimate: Joan, Lady of Wales Richard FitzRoy Oliver FitzRoy Geoffrey FitzRoy John FitzRoy Henry FitzRoy Osbert Gifford Eudes FitzRoy Bartholomew FitzRoy Maud FitzRoy Isabel FitzRoy Philip FitzRoy William de Forz
Henry III of England Wife: Eleanor of Provence Edward I of England Margaret of England Beatrice of England Edmund Crouchback Katherine of England
Edward I of England Wives: Eleanor of Castile Margaret of France, Queen of England Henry Eleanor of England, Countess of Bar Joan, Countess of Hertford and Gloucester Alphonso, Earl of Chester Margaret of England, Duchess of Brabant Mary of Woodstock Elizabeth of Rhuddlan Edward II of England Thomas of Brotherton, 1st Earl of Norfolk Edmund of Woodstock, 1st Earl of Kent
Edward II of England Wife: Isabella of France Edward III of England John of Eltham, Earl of Cornwall Eleanor of Woodstock Joan of the Tower Illegitimate: Adam
Edward III of England Wife: Philippa of Hainault Edward the Black Prince Isabella de Coucy Joan of England Lionel of Antwerp, Duke of Clarence John of Gaunt, 1st Duke of Lancaster Edmund of Langley, 1st Duke of York Mary of Waltham Margaret, Countess of Pembroke Thomas of Woodstock, Duke of Gloucester Illegitimate: John de Southeray Jane Northland Joan Skerne
Richard II of England Wives: Anne of Bohemia Isabella of Valois
Henry IV of England Wives: Mary de Bohun Joan of Navarre, Queen of England Henry V of England Thomas of Lancaster, Duke of Clarence John of Lancaster, Duke of Bedford Humphrey, Duke of Gloucester Blanche of England Philippa of England Illegitimate: Edmund Leboorde
Henry V of England Wife: Catherine of Valois Henry VI of England
Henry VI of England Wife: Margaret of Anjou Edward of Westminster, Prince of Wales
Edward IV Wife: Elizabeth Woodville Elizabeth of York Mary of York Cecily of York Edward V Margaret of York Richard of Shrewsbury, Duke of York Anne of York, Lady Howard George Plantagenet, Duke of Bedford Catherine of York Bridget of York Illegitimate: Elizabeth Plantagenet Arthur Plantagenet, 1st Viscount Lisle Grace Plantagenet
Edward V no consort or issue
Richard III of England Wife: Anne Neville Edward of Middleham, Prince of Wales Illegitimate: John of Gloucester Katherine, Countess of Pembroke Richard of Eastwell
Category

• 1153 births
• 1156 deaths
• 12th-century English people
• Heirs to the English throne
• Heirs apparent who never acceded
• House of Plantagenet
• Burials at Reading Abbey
• House of Anjou
• Children of Henry II of England
• Monarchs who died as children
• Sons of kings