According to the notes on her will dated 1 Oct 1438, she was the daughter of Ralph first Earl of Westmoreland, and widow of Peter Lord de Mauley the eighth, who died in 1414, with no issue. After his death, she is said to have married Sir Francis Goddard, and to have had a daughter Anne who married Sir Brian Stapleton
↑ Testamenta eboracensia; or, Wills registered at York, illustrative of the history, manners, language, statistics, &c., of the province of York, from the year 1300 downwards by York (England); Raine, James, 1791-1858, ed. cn; Clay, John William, 1838-1918, ed; Raine, James, 1830-1896, ed - Testamentum Matildis Dominae de Malolacu. Archive.org. eBook.