Friedrich married Countess of Zweibrocken Eleonore Katharine on 06 Sep 1646 in Stockholm, Stockholms l©Pn, Sweden. Eleonore (daughter of Count of Zweibrocken-Kleeburg Johann Kasimir and Princess of Sweden Catharina Karlsdotter) was born on 27 May 1626 in Stegeborg Slott, Gryt, hosterghotland, Sweden; died on 3 Mar 1692 in Osterholz, Bremen, Germany; was buried in Aldsthadter Pfarrkirche, Eschwege, Hessen-Nassau, Prussia. [Group Sheet] [Family Chart]

1. Princess of Hesse-Eschwege Margarethe was born on 31 Mar 1647 in Erfurt, Sachsen, Prusssi; was christened on 31 Mar 1647 in Erfurt, Sachsen, Prusssi; died on 19 Oct 1647.
2. Princess of Hesse-Eschwege Christine was born on 30 Oct 1648 in Kassel, Hessen-Nassau, Prussia; was christened on 30 Nov 1648 in Kassel, Hessen-Nassau, Prussia; died on 18 Mar 1702 in Bevern, Braunschweig, Germany.
3. Princess of Hesse Elisabeth was born on 7 Apr 1650 in Eschwege, Hessen-Nassau, Prussia; was christened on 22 Apr 1650 in Eschwege, Hessen-Nassau, Prussia; died on 27 Apr 1651.
4. Princess of Hesse Juliane was born on 14 May 1652 in Eschwege, Hessen-Nassau, Prussia; died on 20 Jun 1693.
5. Princess of Hesse-Eschwege Charlotte was born on 3 Sep 1653 in Eschwege, Hessen-Nassau, Prussia; was christened before 08 Sep 1653 in Eschwege, Hessen-Nassau, Prussia; died on 7 Feb 1708 in Bremen, Bremen, Germany; was buried in Altsthadter Kirche, Eschwege, Hessen-Nassau, Prussia.
6. Prince of Hesse Friedrich was born on 30 Nov 1654 in Eschwege, Hessen-Nassau, Prussia; was christened on 17 Dec 1654 in Eschwege, Hessen-Nassau, Prussia; died on 27 Jul 1655.