Eric Miller's Family Tree

Marriage

Notes

Gilbert's first marriage was to Alice de Lusignan, also known as Alice de Valence, the daughter of Hugh XI of Lusignan and of the family that succeeded the Marshal family to the title of the Earl of Pembroke in the person of William de Valence, 1st Earl of Pembroke. They married in 1253, when Gilbert was ten years old. She was of high birth, being a niece of King Henry, but the marriage floundered.
Gilbert and Alice separated in 1267; allegedly, Alice's affections lay with her cousin, Prince Edward. Previous to this, Gilbert and Alice had produced two daughters:
Isabella de Clare (10 March 1262-1333), after a marriage with Guy de Beauchamp, 10th Earl of Warwick having been contemplated, or possibly having taken place and then annulled, married Maurice de Berkeley, 2nd Baron Berkeley
Joan de Clare (1264-after 1302), married (1) Duncan Macduff, 7th Earl of Fife; (2) Gervase Avenel