Kurš apprecējās ar Burgravine Louise Isabelle of Kirchberg?

Louise Isabelle Alexandrine Augusta, Countess of Sayn-Hachenburg, Burgravine of Kirchberg, full German name: Luise Isabelle Alexandrine Auguste, Gräfin zu Sayn-Hachenburg, Burggräfin von Kirchberg (19 April 1772, Hachenburg – 6 January 1827, Vienna, Austrian Empire) was the Princess consort of Nassau-Weilburg (28 November 1788 – 9 January 1816) through her marriage to Frederick William, Prince of Nassau-Weilburg.

Frederick William, Prince of Nassau-Weilburg (Friedrich Wilhelm, 25 October 1768, The Hague – 9 January 1816, Weilburg) was a ruler of Nassau-Weilburg. He was created Prince of Nassau and reigned jointly with his cousin, Prince Frederick Augustus of Nassau-Usingen, who became Duke of Nassau. Frederick William died in January 1816, only two months before his cousin. Both men were succeeded by Frederick William's son, William.