Biography
Karoline Felizitas Saarbrücken von Leiningen-Dagsburg-Heidesheim, Gräfin zu Leiningen-Langsberg-Heidesheim, was born 22 May 1734 in Heidesheim to Christian Karl Reinhard von Leiningen-Dagsburg-Heidesheim (1695-1766) and Katharina Polyxena zu Solms-Rödelheim-Rödelheim (1702-1765) and died 8 May 1810 Frankfurt am Main of unspecified causes. She married Karl Wilhelm von Nassau-Usingen (1735-1803) 16 April 1760 in Heidesheim am Rhein.
Children
| Name | Birth | Death | Joined with |
| Karl Wilhelm von Nassau-Usingen (1761-1763) | |||
| Caroline Polyxene von Nassau-Usingen (1762-1823) | 4 April 1762 Schloß Biebrich, Biebrich, Hesse, Germany | 17 August 1823 Offenbach-Rumpenheim, Hesse, Germany | Friedrich III. von Hessen-Kassel und Rumpenheim (1747-1837) |
| Luise Henriette Karoline von Nassau-Usingen (1763-1845) | |||