Netherlands
- References (4)
- 0839 Individual: Gerolf II Count of West FRIESLAND (b. <0839 )
- 0845 Individual: Gerulf Count von FRIESLAND (b. 0845 )
- 0845 Individual: Gerulf Count of FRIESLAND (b. ~0845 )
- 1039 Individual: Dirk III HOLLAND (d. 1039 )