Isabel de Clare, 4th Countess of Pembroke
…de Clare, suo jure 4th Countess of Pembroke and Striguil (c. 1172 – 11 March 1220), was an Anglo-Norman and Irish noblewoman who was the daughter of Aoife MacMurrough and Richard de Clare and one of the wealthiest heiresses in Wales and Ireland. She was the wife of William Marshal, 1st Earl of Pembroke, who served…