Franz married Johanna Martha Philippina Lauckhard on 8 Feb 1741 in Vorderweidenthal, Pfalz. Johanna (daughter of Johannes Balthasar Lauckhard and Anna Maria Rüdiger) was born on 25 Aug 1715 in Obrigheim an der Enz; died on 28 Jun 1787 in Sarnstall, Pfalz. [Group Sheet] [Family Chart]

1. Maria Charlotta Philippina Merck was born on 22 Jun 1748 in Annweiler am Trifels, Pfalz; was christened on 24 Jun 1748 in Annweiler am Trifels, Pfalz; died on 1 Jul 1791 in Sarnstall, Pfalz.