Ernestine of Sayn-Wittgenstein, was a German ruler, Sovereign Countess of Sayn-Wittgenstein-Hachenburg in 1648-1661. She was also Countess consort of Manderscheid-Blankenheim by marriage to Count Salentin Ernest of Mandersheid-Blankenheim.
- Born
- April 23, 1626, May 3, 1625
- Died
- October 13, 1661, October 23, 1661