He is married to Margarethe Koopmans.
They got married on August 26, 1926 at Heerlen, Limburg, Nederland , he was 26 years old.
Child(ren):
== Biography ==
Johannes was born in 1900.
Unsourced family tree handed down to [[Van Leeuwen-708|Ruben van Leeuwen]].
== Sources ==
* Relative
* Mariage: Regionaal Historisch Centrum Limburg (RHCL)
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Johannes Hempe | ||||||||||||||||||||||||||||||||||
1926 | ||||||||||||||||||||||||||||||||||
Margarethe Koopmans |
The data shown has no sources.