Ernest Augustus was born 5 June 1771, and was created Duke of Cumberland and Teviotdale, and Earl of Armagh in 1799. He married Princess Frederica of Mecklenburg-Strelitz (1778-1841) in 1815. Princess Frederica was the widow of Prince Frederick of Prussia, and of Frederick, Prince of Solms-Braunfels. Ernest Augustus ascended the throne of Hanover as King Ernest on 20 June 1837. He died 18 November 1851.
The couple had one child: