Johannes married Anna Maria Hasselwander about 1782. Anna (daughter of Johannes Hasselwander and Anna Maria Kuntz) was born on 21 Dec 1758 in Schwanheim, Pfalz; died on 20 Dec 1802 in Schwanheim, Pfalz. [Group Sheet] [Family Chart]

1. Johannes Klug was born on 24 Dec 1783 in Schwanheim, Pfalz; died on 8 Feb 1784 in Schwanheim, Pfalz.
2. Johannes Nepomuk Klug was born on 3 Jun 1785 in Schwanheim, Pfalz; was christened on 4 Jun 1785 in Schwanheim, Pfalz.
3. Johannes Michael Klug was born on 6 Feb 1789 in Schwanheim, Pfalz.
4. Anna Maria Klug was born on 2 May 1792 in Schwanheim, Pfalz; was christened on 3 May 1792 in Schwanheim, Pfalz.
5. Barbara Klug was born on 27 Apr 1796 in Schwanheim, Pfalz; was christened on 28 Apr 1796 in Schwanheim, Pfalz.
6. Margarethe Klug was born on 25 Nov 1798 in Schwanheim, Pfalz; was christened on 26 Nov 1798 in Schwanheim, Pfalz.

Johannes married Margaretha Andres on 23 Feb 1803 in Schwanheim, Pfalz. Margaretha (daughter of Johannes Andres and Maria Elisabetha Eichelberger) was born on 4 Nov 1766 in Schwanheim, Pfalz; was christened on 5 Nov 1766 in Schwanheim, Pfalz; died in in Schwanheim, Pfalz. [Group Sheet] [Family Chart]

1. Johannes Friedrich Klug was born on 31 Dec 1803 in Schwanheim, Pfalz.
2. Johannes Philipp Klug was born on 19 Nov 1805 in Schwanheim, Pfalz; died in in München, Odessa, Ukrayina.