Britonia

Britonia (which became Bretoña in Galician and Spanish) is the name of a Romano-British settlement on the northern coast of the Iberian peninsula at the time of the Anglo-Saxon invasion of Britain.

The area is roughly that of the northern parts of the modern provinces of A Coruña and Lugo in the autonomous community of Galicia, Spain.

Britonia was established in the Germanic Kingdom of the Suebi, in Gallaecia, northwestern Hispania, in the late 5th and early 6th centuries AD by Romano-Britons.

Britonia is therefore similar to Brittany, in Gaul (present-day France), by being settled by expatriate Britons at roughly the same time.

[3] What little is known of Britonia is deduced from its religious history - which is a very uncertain guide as to how long it retained a Celtic linguistic and cultural character.