In 1791 he married Frederica Wilhelmina, daughter of Frederick William II., king of Prussia, thus cementing very closely the relations between the houses of Orange-Nassau and Hohenzollern.
His father was Christian Augustus (1673-1726), duke of Schleswig-HolsteinGottorp, bishop of Lubeck, and administrator, during the war of 1700-1721, of the duchies of Holstein-Gottorp for his nephew Charles Frederick; his mother was Albertina Frederica of BadenDurlach.
It was erected under the will of his daughter Frederica, a resident of Ealing.
(1786-1848), king of Denmark and Norway, the eldest son of the crown prince Frederick and Sophia Frederica of Mecklenburg-Schwerin, was born on the 18th of September 1786 at Christiansborg castle.
His unfortunate first marriage with his cousin Charlotte Frederica of MecklenburgSchwerin was dissolved in 1810.