Gerolf II Count of West FRIESLAND 
He had a biological son named Dietrich (Dirk) I Count of West.
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Personal Details
Gerolf II Count of West FRIESLAND
Gerolf II Count of West was born before 0839 in Netherlands. He died after 0885.
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Children
Dietrich (Dirk) I Count of West FRIESLAND
Dietrich (Dirk) I Count of West was born before 0885 in Noordwijk-Binnen, Zuid, Holland. Dietrich (Dirk) I Count of West is no longer alive.