. . . . . . . . "4th Duke of Leeds" . "Thomas Osborne,
'''4th Duke of Leeds'''" . . . . . . . . . . "1789" . . "4th Duke" . . . . "1713" . . . "Thomas Osborne" . "Duke of Leeds" . . . . . . "Thomas, duke of Leeds" . "The Duke of Leeds" . . . . . . . . . . . . . . "Thomas, Marquess of Carmarthen" . . . . . "Thomas" . "Thomas Osborne, 4th Duke of Leeds" . . . "Thomas Osborne, 4th Duke of Leeds" .