Maud FitzJohn, Countess of Warwick English countess (1238–1301) Parents Isabel Bigod John Fitzgeoffrey Children Guy de Beauchamp, 10th Earl of Warwick unknown daughter de Beauchamp unknown daughter de Beauchamp Sarah de Beauchamp unknown daughter de Beauchamp Isabella de Beauchamp Siblings Margaret de Lacy Maud de Lacy, Baroness Geneville Aveline fitz John Joan fitz John Richard fitz John, 1st and last Lord FitzJohn Isabel fitz John Walter de Lacy Sir John fitz John Partners Sir Gerard de Furnivalle William de Beauchamp, 9th Earl of Warwick