The territory of West Frisia is located in the Netherlands.
Lordship of Frisia / Lordship of Friesland during the Guelderian Wars
West Friesland historic, maybe wrong for Vlieland and Terschelling
Friesland province in the Republic of the Seven United Netherlands, Vlieland and Terschelling are in Holland province
Lordship of Frisia 1680 divided into kwartiers Westergo, Oostergo, Zevenwouden, Steden