John married Anna Elizabeth Lenner on 14 Jan 1748/1749 in Rottenburg, Baden-Wurttemberg, Germany. Anna was born on 19 Nov 1715 in Germany; died on 1 May 1776 in Alsace, Berks Co., Pennsylvania, USA; was buried in Trinity Lutheran Cemetery, Reading, Berks Co., Pennsylvania, USA. [Group Sheet] [Family Chart]

1. Peter Heckman died after 1770.
2. John Adam Heckman, Jr. died after 1770.
3. Maria Catharine Heckman was born in Rottenburg, Baden-Wurttemberg, Germany; died after 1782.
4. Anna Margaretha Heckman was born about 1740 in Rottenburg, Baden-Wurttemberg, Germany; died after 1790 in Pennsylvania, USA.
5. Johan George Heckman was born on 6 Jan 1747/1748 in Rottenburg, Baden-Wurttemberg, Germany; died on 22 Mar 1835 in Berks Co., Pennsylvania, USA; was buried in Trinity Lutheran Cemetery, Reading, Berks Co., Pennsylvania, USA.
6. Jacob Heckman was born on 15 Apr 1751 in Montgomery Co., Pennsylvania, USA; died after 1770.
7. Maria Elisabetha Heckman was born before 1755; died after 1810 in Pine Grove, Schuylkill Co., Pennsylvania, USA.
8. Christina Heckman was born about 1758 in Montgomery Co., Pennsylvania, USA; died after 1779.