Attention: Wife (Sophia Dorothea van Hannover Prinses van Groot-Brittannië) is also his cousin.
He is married to Sophia Dorothea van Hannover Prinses van Groot-Brittannië.
They got married on November 28, 1706 at Berlijn , he was 18 years old.
Child(ren):
Bron: http://en.wikipedia.org/wiki/Friedrich_Wilhelm_I_of_Prussia
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