|SOME NOTES ON MEDIEVAL ENGLISH GENEALOGY|
Volume 9, page 129:
He [Piers (de Montfort), Lord Montfort (d. before 24 Jan. 1369/70)] is said to have m. Margaret, da. of Sir Thomas DE FURNIVALLE [LORD FURNIVALLE].(o)
Dugdale, Warwickshire, ed. 1730, p. 803. In Hunter's Hallamshire, p. 44, this Margaret (b. 1320) is mentioned, but no reference is made to her marriage.
Douglas Richardson, in August 2002, posted a record of her death, as the first-born daughter of Sir Thomas de Furnivalle, Lady Montfort, 5 Kalends October [27 September] 1339, in her 19th year [citing the Annals of Croxden Abbey, Staffordshire, Collectanea Topographica et Genealogica, vol. 2, p. 307 (1835)].