He is married to Magdalena Gräfin von Neuenahr.
They got married on June 24, 1573, he was 18 years old.
Child(ren):
Geschichte der Kölnischen, Jülichschen und Bergischen Geschlechter in Stammtafeln, Wappen, Siegeln und Urkunden
by Anton Fahne
Publication date 1853
p. 156
https://archive.org/details/bub_gb_4NVDAAAAcAAJ/page/n167/mode/1up
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Arnold III Graf von Bentheim | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1573 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Magdalena Gräfin von Neuenahr |
The data shown has no sources.