Michael married Anna Maria Schmitt on 17 Jan 1752 in Niederschlettenbach, Pfalz, Bayern. Anna was born in 1731 in Niederschlettenbach, Pfalz, Bayern; died on 22 Mar 1776 in Niederschlettenbach, Pfalz, Bayern. [Group Sheet] [Family Chart]

1. Jakob Mertz was born on 24 Jul 1757 in Niederschlettenbach, Pfalz; died on 14 May 1799 in Erfweiler, Pfalz.
2. Ottilia Mertz was born on 4 Jul 1760 in Niederschlettenbach, Pfalz, Bayern; died on 31 Dec 1806 in Erfweiler, Pfalz, Bayern.
3. Katharina Mertz was born on 26 Apr 1770 in Niederschlettenbach, Pfalz, Bayern.