After the collapse of the Napoleon's empire, he became Military Governor of Hanover 4 November 1813--24 October 1816, then Governor General of Hanover 24 October 1816--20 June 1837 (viceroy from 22 February 1831).
He became Military Governor of Hanover 4 November 1813--24 October 1816, then Governor General of Hanover 24 October 1816--20 June 1837 (viceroy from 22 February 1831). This was after the collapse of the Napoleon's empire.