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How did Brittany get its name?

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The old walled city of Saint-Malo, Brittany région, France. — Brittany The old walled city of Saint-Malo, Brittany *région*, France.

Brittany derives its name from the migration of Celts from Britain to the region during the 5th and 6th centuries. These populations moved to the area, then known as Armorica, to seek refuge from Anglo-Saxon invaders.12

Prior to this migration, the region was a Romanized territory of Gaul known as Armorica, a name derived from Celtic words meaning "on the sea". The arrival of the British Celts introduced the Breton language to the western part of the peninsula, eventually leading to the region becoming known as Brittany.213