Thus, although they were undoubtedly the senior cadet line of the royal house of Denmark (Oldenburg), the family was regarded as a bit lower than the Ebenbürtige which the rulers of small Germany principalities thought to be the standard.

Louise Auguste's father, the king, was a man with mental disabilities and, throughout his reign, effective control was in the hands of other people (ranging from his step-mother to his wife to his half-brother to various courtiers).

The king's mental condition, and his unharmonious relationship with his wife, gave rise to speculation that Louise had been sired by someone other than him, and rumour awarded fatherhood to Johann Friedrich Struensee, the king’s court physician and de facto regent of the country at the time of Louise's birth.

The story of antecedents of the prince's marriage goes as follows: In February 1779, the nation's foremost statesman, Chief Minister Count Andreas Peter Bernstorff, hatched an ingenious plan for the young princess, something that often has been customary with a royal child suspected of not being sired by its nominal father but in its mother's illicit liaison: to marry such a child to another member of the royal house.

Since a male child of hers could inherit the throne some day, it would be advantageous to arrange a marriage early, and to marry the "half-royal" back into the extended royal house, to the Hereditary Prince of Augustenborg.

The couple lived at the Castle for many years until the Christiansborg Palace fire of 1794 and the death of his father, the Duke of Augustenborg Frederick Christian I, at which point the prince inherited the estate and the duchy.

The marriage eventually fell into acrimony and reproach, and Frederick Christian tried to legally limit Louise Auguste's influence over their children's futures.