Prince William Augustus (1721–1765) Duke of Cumberland, Marquess of Berkhamsted, Earl of Kennington, Viscount Trematon, Baron Alderney
Dukedom of Cumberland (3rd creation), Marquessate of Berkhamsted, Earldom of Kennington, Viscountcy Trematon (1st creation), and Barony Alderney extinct, 1765
Prince William Augustus (1721–1765) Duke of Cumberland, Marquess of Berkhamsted, Earl of Kennington, Viscount Trematon, Baron Alderney
Dukedom of Cumberland (3rd creation), Marquessate of Berkhamsted, Earldom of Kennington, Viscountcy Trematon (1st creation), and Barony Alderney extinct, 1765