He is married to Barbara Elisabeth van Thun-Castelthun.
They got married on July 4, 1707, he was 21 years old.
Child(ren):
Bron:
Deutsche Adelsproben, 1868, Pag. 240
https://books.google.nl/books?id=e60TAAAAYAAJ&pg=PA240&dq=Georg+sigismund+Firmian+Freyberg&hl=nl&sa=X&ved=0CB8Q6AEwAGoVChMIwPKypZmVyAIVRDoUCh00fQ-Q#v=onepage&q=Georg%20sigismund%20Firmian%20Freyberg&f=false
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