William MARSHAL 1st Earl of Pembroke

  General Notes:

William Marshal, 1st Earl of Pembroke was born in 1146. He was the son of John FitzGilbert and Sybil de Salisbury.2,3 He married Isabella de Clare, Countess of Pembroke, daughter of Richard FitzGilbert de Clare, 2nd Earl of Pembroke and Aoife MacMorrough, in August 1189 at London, England. He died on 14 May 1219 at Caversham, Berkshire, England.
William Marshal, 1st Earl of Pembroke also went by the nick-name of William 'the Elder'. He was created 1st Earl of Pembroke [England] on 27 May 1199.1
Children of William Marshal, 1st Earl of Pembroke and Isabella de Clare, Countess of Pembroke

Sibyl Marshal+4
Walter Marshal, 5th Earl of Pembroke d. 24 Nov 1245
Gilbert Marshal, 4th Earl of Pembroke5 d. 27 Jun 1241
Eve Marshal+6 d. b 1246
Anselm Marshal, 6th Earl of Pembroke d. 22 Dec 1245
Johanna Marshal
Margaret Marshal+7 b. c 1189
William Marshal, 2nd Earl of Pembroke b. c 1190, d. 24 Apr 1231
Richard Marshal, 3rd Earl of Pembroke b. 1191, d. 16 Apr 1234
Matilda Marshal+8 b. 1192, d. 27 Mar 1248
Lady Isabella Marshal+9 b. 9 Oct 1200, d. 17 Jan 1240

William married Isabella DE CLARE Countess of Pembroke, daughter of Richard FizGilbert DE CLARE 2nd Earl Pembroke, Earl of Buckingham and Aoife MACMORROUGH. (Isabella DE CLARE Countess of Pembroke was born in 1172 and died in 1220.)