Elizabeth (died Aug 1354), widow of 2nd Lord (Baron) Montagu of the 1299 creation and daughter of Sir Piers de Mo(u)ntfort, of Beaudesert, Warwicks. [Burke's Peerage]
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He [Thomas de Furnivalle] married, 2ndly (pardon for marrying without royal licence, 8 June 1322, for a fine of £200), Elizabeth, widow of Sir William DE MOUNTAGU, Of Shepton Montagu, Somerset, Aston Clinton,, Bucks, &c. [LORD MOUNTAGU] (who died 18 October 1319), and daughter of Sir Piers DE MOUNTFORT of Beaudesert, co. Warwick, by Maud, daughter and heir of Matthew DE LA MARE. On 13 April 1325 he had licence to convey the manors of Sheffield, Worksop, Grassthorpe, Eyam, and Brassington, to himself for life, with remainders to Thomas and William his sons, in successive tail general, remainder to his own right heirs. He died shortly before 18 April 1332. On 6 June 1332 his widow had livery of her dower, and of the knights' fees and advowsons of her dower, all of which had been assigned to her by the King. She died in August 1354, and was buried in the Priory of St. Frideswide (now Christ Church), Oxford. [Complete Peerage V:581-2, XIV:332 (transcribed by Dave Utzinger)]