Isabel de Valence (1260-1305) (d. 1305) Parents Joan de Munchensi William de Valence, 1st Earl of Pembroke Children Elizabeth de Hastings John Hastings, 2nd Baron Hastings Joan de Hastings Henry de Hastings Margaret de Hastings William de Hastings Siblings Isabel (2) ferch William de Valence Aymer de Valence, 2nd Earl of Pembroke William de Valence Elizabeth de Comyn Margaret de Valence John de Valence Joan de Valence Agnes de Valence Partners John Hastings, 1st Baron Hastings