Princess Frederica Louise Wilhelmina of Orange-Nassau (28 November 1770 – 15 October 1819) was a Hereditary Princess of Brunswick; married 14 October 1790 to Hereditary Prince Charles George August of Brunswick-Wolfenbüttel (1766 – 20 September 1806), son of Charles William Ferdinand, Duke of Brunswick-Wolfenbüttel.

The marriage was seen as a suitable gesture of gratitude and alliance between the House of Orange and the Duke of Brunswick, who had assisted her parents during the Dutch rebellion in 1787.

Louise was not forced to agree, but reportedly, she accepted well aware of the fact that it was very difficult for her to find another spouse of suitable rank and religion.

Louise was reportedly homesick in Brunswick, experienced a difficulty to adapt to new customs and missed the more vivid culture life in the Netherlands.

[6] She started a correspondence with her mother, her governess and former tutor which is preserved and regarded as an important source of contemporary life at the Brunswick court.

The Swedish Princess Hedwig Elizabeth Charlotte described her, as well as her family, at the time of her visit in August, 1799: Our cousin, the Duke, arrived immediately the next morning.

As a noted military man he has won many victories, he is witty, literal and a pleasant acquaintance, but ceremonial beyond description.

The Hereditary Prince, chubby and fat, almost blind, strange and odd – if not to say an imbecile – attempts to imitate his father but only makes himself artificial and unpleasant.

The other son, Prince Georg, is the most ridiculous person imaginable, and so silly that he can never be left alone but is always accompanied by a courtier.