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- During 775–916, West Frisia was ruled as a county.
- During 916–993, the County of Frisia and Holland was ruled by one count.
- After 993, Count of Holland was a separate title
- In the 11th century, the Brunonids (after Bruno II) or Liudolfings (after Liudolf, Margrave of Frisia) were margraves or counts of Middle Frisia.