Agnes of Chester -1247 (1174–1247) Parents Bertrade de Montfort Hugh de Kevelioc, 5th Earl of Chester Children William de Ferrers, 5th Earl of Derby Agnes de Ferrers Berta (?) Siblings Hawise of Chester, 1st Countess of Lincoln Mabel of Chester Matilda of Chester, Countess of Huntingdon Ranulf de Blondeville, 6th Earl of Chester Amicia de Meschines Beatrix of Kevelioc Partners William de Ferrers, 4th Earl of Derby