Isabel fitz John est. 1235 - bef. 1264 Parents John Fitzgeoffrey Isabel Bigod Children Isabel de Vipont Siblings Aveline fitz John Joan fitz John Maud FitzJohn, Countess of Warwick Richard fitz John, 1st and last Lord FitzJohn Sir John fitz John Margaret de Lacy Maud de Lacy, Baroness Geneville Walter de Lacy Partners Walter de Burgh, 1st Earl of Ulster Robert (II) de Vieuxpont