He was a younger brother of Frederik Christian II, Duke of Augustenborg, brother-in-law of Princess Louise Auguste of Denmark and an uncle of Caroline Amalie of Augustenburg, Queen consort of Denmark and Christian August, Duke of Augustenborg.
He is the younger sibling of Frederik Christian II, Duke of Augustenborg; he is related by marriage to Princess Louise Auguste of Denmark; and he is the uncle of Caroline Amalie of Augustenburg, Queen consort of Denmark and Christian August, Duke of Augustenborg.