Gerulf Count of FRIESLAND 
He had a biological son named Dirk (Dietrich) I Count of.
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Personal Details
Gerulf Count of FRIESLAND
Gerulf Count of was born about 0845 in Friesland, Netherlands. Gerulf Count of is no longer alive.
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Children
Dirk (Dietrich) I Count of HOLLAND
Dirk (Dietrich) I Count of was born in 0900 in Noordwijk-Binnen, Zuid Holland, Netherlands. Dirk (Dietrich) I Count of is no longer alive.