Louise Henrietta of Nassau (Dutch: Louise Henriëtte van Nassau) 1627 – 1667, was a Countess of Nassau.
Evelyn met her on 10 September 1641.
- Father: Frederick Henry, Prince of Orange
- Mother: Amalia of Solms-Braunfels
- Spouse: Frederick William, Elector of Brandenburg (not in diary)
- Granddaughter of William I, Prince of Orange, “William the Silent”
Wikipedia for background, portrait.