Family: Gilbert de Clare, 6th Earl of Hertford, 7th Earl of Gloucester / Joan of Acre, Countess of Gloucester and Hertford (F3085)
m. 30 Apr 1290-
Father | Male
Gilbert de Clare, 6th Earl of Hertford, 7th Earl of Gloucester
Born 2 Sep 1243 Christchurch, Hampshire 
Died 7 Dec 1295 Monmouth Castle, Monmouth, Monmouthshire, Wales Buried Tewkesbury Abbey, Tewkesbury, Gloucestershire, England Married 30 Apr 1290 [1, 2, 3] Westminster Abbey, Westminster, London, England [1, 2, 3] Other Spouse Alix de Lusignan | F4494 Married Spring 1253 Father Richard de Clare, 5th Earl of Hertford, 6th Earl of Glouchester | F3002 Group Sheet Mother Matilda de Lacy, Countess of Gloucester and Hertford | F3002 Group Sheet
Mother | Female
Joan of Acre, Countess of Gloucester and Hertford
Born Spring 1272 Acre, Israel Died 23 Apr 1307 Clare, Suffolk, England Buried Priory Church of the Austin Friars, Clare, Suffolk, England Father Edward I, King of England | F2958 Group Sheet Mother Eleanor of Castile, Queen Consort of England, Countess de Ponthieu | F2958 Group Sheet
Child 1 | Male
Gilbert de Clare, 10th Earl of Clare, 7th of Herford, 8th of Glouchester
Born 4 May 1291 Winchcombe, Gloucestershire Died 24 Jun 1314 Bannockburn, Scotland Buried Tewkesbury Abbey, Tewkesbury, Gloucestershire, England Spouse Matilda de Burgh | F4493 Married 29 Sep 1308 Waltham Abbey, Essex, England
Child 2 | Female
+ Eleanor de Clare
Born Oct 1292 Died 30 Jun 1337 Buried Spouse Hugh "the Younger" le Despenser, KB, 1st Baron le Despenser | F3083 Married 1306 Spouse William de Mortimer, Lord Zouche | F3039 Married Jan 1329
Child 3 | Female
+ Margaret de Clare, Countess of Cornwall and Gloucester
Born Abt 1293 Died 9 Apr 1342 Buried Queenhithe, London Spouse Piers de Gaveston, 1st Earl of Cornwall | F4369 Married bef. 7 Jun 1308 Berkhamsted Castle, Berkhamsted, Hertfordshire Spouse Hugh de Audley, 1st Earl of Gloucester | F4368 Married 28 Apr 1317
Child 4 | Female
+ Elizabeth de Clare
Born 16 Sep 1295 Tewkesbury, Gloucestershire, England Died 4 Nov 1360 Buried Spouse John de Burgh | F5488 Married 30 Sep 1308 Waltham Abbey, Essex, England Spouse Theobald II de Verdun, Baron Verdun | F5487 Married ca. 1315 Bristol, Gloucestershire, England
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Sources - [S336429] Britain's Royal Families: A Complete Genealogy, Alison Weir, (London: Vintage Books, 2008), 131.
- [S157] A Great and Terrible King: Edward I and the Forging of Britain, Marc Morris, (New York: Pegasus Books, 2015), 224.
- [S154] The Demon's Brood: A History of the Plantagenet Dynasty, Desmond Seward, (New York: Pegasus Books, 2014), 97-98.
- [S336429] Britain's Royal Families: A Complete Genealogy, Alison Weir, (London: Vintage Books, 2008), 131.