Countess Louise Juliana of Nassau (b. 1576)

Louise Juliana of Orange-Nassau (31 March 1576 in Delft – 15 March 1644 in Königsberg) was a countess consort of the Palatinate by marriage to Frederick IV, Elector Palatine, and took part in the regency government of her son between 1610 and 1614. She also acted as a mediator between the king of Sweden and the elector of Brandenburg in 1631.