Louise Rasmussen

Danish ballet dancer and actress, morganatic wife of King Frederick VII of Denmark

Louise Christine Rasmussen, also known as Countess Danner (21 April 1815 – 6 March 1874), was a Danish ballet dancer and stage actress. She was the mistress and later the morganatic wife of King Frederick VII of Denmark.²

From Wikipedia’s article on Louise Rasmussen (this version), CC BY-SA 4.0.

Born Apr 21, 1815, died Mar 6, 1874.¹