Johannes Mertz
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- 1 Johannes Mertz [1]
- Christina Reuer
- 2 Reinhold Mertz [1.1] b. 12 Jan 1903 d. 5 May 1990
- Frieda Wanner b. 1 Oct 1904 d. 31 Jul 1990
- 3 Esther Christiana Mertz [1.1.1]
- Reinhold Philip Opp b. 27 Oct 1923 d. 9 Feb 2012
- 3 Melvin Mertz [1.1.2]
- Ella Lachenmeier b. 2 Mar 1934 d. 24 Jul 2019
- 4 Mertz [1.1.2.1]
- 4 Mertz [1.1.2.1]
- 3 Allan Mertz [1.1.3]
- 3 Alvin Mertz [1.1.4]
- 3 Quentin Mertz [1.1.5]
- 3 Joanne Mertz [1.1.6]
- 3 Bernice Mertz [1.1.7]
- 3 Sandra Mertz [1.1.8]
- 3 Esther Christiana Mertz [1.1.1]
- 2 Reinhold Mertz [1.1]