Christian V of Denmark
Frederick married on 17 September 1829, at Augustenburg, his second cousin Countess Henriette of Danneskjold-Samsøe (9 May 1806 - 10 September 1858) who was a Danish noblewoman and great-great-great granddaughter of Christian V of Denmark, belonging to an illegitimate branch of the House of Oldenburg. His brother had married his wife's elder sister nine year previous. They had four children: