 Deeply afflicted by the humiliation of Prussia and Austria, Prince Hermann Friedrich Otto died on 2 November 1810.Prince Hermann Friedrich Otto was married three times.On 18 November 1773 he married Countess Louise of Merode-Westerloo
(* 28 September 1747; † 14 November 1774), the daughter of Jean Guillaume von Merode-Westerloo (1722–1763).