Frisia

noun2

1. •
   Fryslân, a province of the Netherlands. Also referred to as Friesland (using the Dutch vernacular endonym) and West Frisia.

   • The three areas populated by Frisians today are the Dutch province of Frisia (West-Frisia), the German landscape East-Frisia […], and the German district North-Frisia […]. — 2005
2. •
   A coastal geographical region in Western Europe, along the southeastern corner of the North Sea in what today is mostly a large part of the Netherlands (including the present-day province of Frisia; see below) and smaller parts of northern Germany (including present-day East Frisia). It is the traditional homeland of the Frisians.

   • Devoting himself to labour among the heathen, [Winfrid] crossed to Frisia, in 716; […] — 1878