Viscount Goderich
Henry Grey (1671–1740) succeeded his father, Anthony Grey, as the 12th Earl of Kent in 1702. In 1706, he was elevated to Marquess of Kent, along with Earl of Harold and Viscount Goderich. In 1710 he was elevated once again as Duke of Kent, and following the death of his sons, Marquess Grey (1740) with a special remainder to his granddaughter. Henry had one son and five daughters with his first wife, Jemima Crew (d. 1728), and one son and one daughter with his second wife, Sophia Bentinck (d. 1741). By the time of Henry's death in 1740, both of his sons had died, Anthony (in 1723) and George (in 1733), leaving the Duke of Kent without a male heir. His granddaughter Lady Jemima Campbell would inherit two titles in her own right, Marchioness Grey and Baroness Lucas; but all Henry's other titles, particularly Duke of Kent, became extinct with his death.