Background
He was a younger son of Christian Albert, Duke of Holstein-Gottorp and Princess Frederica Amalia of Denmark, daughter of King Frederick III of Denmark.
He was a younger son of Christian Albert, Duke of Holstein-Gottorp and Princess Frederica Amalia of Denmark, daughter of King Frederick III of Denmark.
Additionally, he was appointed coadjutor of Lübeck, a Lutheran Imperial state within the Holy Roman Empire, in 1701, and his family managed to have him elected as the bishop on 26 April 1706. Upon her death in 1708, Christian August became sole regent of Holstein-Gottorp, which duchy was severely ravaged by the violence of the Great Northern War. Marriage and issue.