Leonhard married Maria Eva Knurr on 15 Feb 1773 in Gossersweiler, Pfalz, Bayern. Maria (daughter of Jakob Knurr and Elisabetha Schlink) was born on 4 May 1747 in Münchweiler am Klingbach, Pfalz, Bayern; was christened on 5 May 1747 in Münchweiler am Klingbach, Pfalz, Bayern; died on 11 Dec 1783 in Münchweiler am Klingbach, Pfalz, Bayern. [Group Sheet] [Family Chart]

1. Katharina Klein was born on 28 Oct 1773 in Münchweiler am Klingbach, Pfalz, Bayern; was christened on 29 Oct 1773 in Münchweiler am Klingbach, Pfalz, Bayern.
2. Maria Anna Klein was born on 28 Apr 1779 in Münchweiler am Klingbach, Pfalz, Bayern; was christened on 29 Apr 1779 in Münchweiler am Klingbach, Pfalz, Bayern.

Leonhard married Anna Maria Arnold on 7 Sep 1784 in Gossersweiler, Pfalz, Bayern. Anna (daughter of Georg Friedrich Arnold and Rosina Walter) was born on 4 Dec 1751 in Stein, Pfalz; was christened on 5 Dec 1751 in Stein, Pfalz; died on 14 May 1826 in Münchweiler am Klingbach, Pfalz, Bayern; was buried on 16 May 1826 in Silz, Pfalz, Bayern. [Group Sheet] [Family Chart]

1. Johannes Michael Klein was born on 16 May 1787 in Münchweiler am Klingbach, Pfalz, Bayern; died on 2 Oct 1842 in Münchweiler am Klingbach, Pfalz, Bayern; was buried on 4 Oct 1842 in Silz, Pfalz, Bayern.