Frederick Louis, Count of Nassau-Ottweiler
Frederick Louis of Nassau-Ottweiler (13 November 1651 – 25 May 1728) was a member of the House of Nassau. Biography. He was born in Ottweiler, the son of John Louis, Count of Nassau-Ottweiler and Countess Palatine Dorothea Catherine of Birkenfeld-Bischweiler. He was count of Nassau-Ottweiler from 1680 until his death. From 1721, he was also Count of Nassau-Idstein; from 1723 also Count of Nassau-Saarbrücken. When he died in Saarbrücken, without a male heir, his territories fell to his cousin Charles of Nassau-Usingen after his death in 1728. Family . Frederick Louis married on 28 July 1680 with Countess Christiane von Ahlefeldt (1659–95), the daughter of Count Friedrich von Ahlefeldt and his first wife Countess Margarethe Dorothea zu Rantzau (1642-1665). They had eight daughters: After Christiane's death, Frederick Louis married on 27 September 1697 Countess Louise Sophie of Hanau-Lichtenberg (11 April 1662 in Bischofsheim am Hohen Steg – 9 April 1751 in Ottweiler), the daughter of Johann Reinhard II of Hanau-Lichtenberg and Countess Palatine Anna Magdalena of Birkenfeld-Bischweiler. This marriage remained childless.