The medieval Frisian lands stretched along the North Sea coast from roughly the Zwin in Flanders to the Weser, a belt of terpen — dwelling mounds raised above the tide before dikes existed — with cattle, sheep, sea fish and salt-marsh grazing, and a trading economy in cloth, cattle and salt. The "Frisian freedom" tradition held that these lands owed no feudal lord. ⚠ A HISTORICAL EXTENT, NOT A MODERN MAP: most of that coast has not been Frisian-speaking for centuries, and nothing here is a claim on it.
Atlas — where and when
Communities and languages
Languages:
Old Frisian
What is recorded
Terp dwelling mounds raised above the tide along the North Sea coast, before dikes existed.documented
Medieval Magna Frisia extended along the North Sea coast from roughly the Zwin to the Weser. Most of that coast has not been Frisian-speaking for many centuries. The historical extent is recorded as history and does not constitute any modern territorial or cultural claim.documented