William Wentworth Fitzwilliam, 4th Earl Fitzwilliam British politician (1748–1833) (1748–1833) Parents Lady Ann Watson-Wentworth William Fitzwilliam, 3rd Earl Fitzwilliam Children Charles Wentworth-Fitzwilliam, 5th Earl Fitzwilliam Siblings Charlotte FitzWilliam George Fitzwilliam Partners Lady Charlotte Ponsonby Louisa Molesworth
