Mabel Fitzwilliam noblewoman; British politician (1870-1951) (1870–1951) Parents William Wentworth-FitzWilliam, Viscount Milton Laura Beauclerk Children Siblings Lady Laura Wentworth-Fitzwilliam William Wentworth-Fitzwilliam, 7th Earl Fitzwilliam Lady Theresa Evelyn Vilunza Wentworth-Fitzwilliam