He is married to Maria Isabella Theresia von und zu Gymnich.
They got married on March 2, 1737, he was 26 years old.
Child(ren):
Nederland's adelsboek 1918,
p. 372
https://archive.org/details/nederlandsadelsb28unse_18/page/372/mode/1up
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Ahnen Tafeln
by Ludwig von Alvensleben
https://archive.org/details/bub_gb_SphAAAAAcAAJ/page/n195/mode/1up
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The data shown has no sources.