Louise Rasmussen, Countess Danner, mistress and morganatic 3rd wife of King Frederik VII; Credit – Wikipedia
- Confidant/Confidante: a close friend or associate to whom secrets are confided or with whom private matters and problems are discussed.
- Favorite: a person treated with special or undue favor by a king, queen or another royal person
- Mistress: a woman who has a continuing, extramarital sexual relationship with one man
This does not purport to be a complete list.
- Sophie Amalie Moth, mistress of King Christian V
- Elisabeth Helene von Vieregg and Charlotte Helene von Schindel, mistresses of King Frederik IV
- Anna Sophie von Reventlow, Queen of Denmark and Norway, mistress and 2nd wife of King Frederik IV
- Adam Gottlob Moltke, favorite of King Frederik V
- Johann Friedrich Struensee, favorite of King Christian VII and lover of Queen Caroline Matilda
- Louise Rasmussen, Countess Danner, mistress and morganatic 3rd wife of Frederik VII