Brythonic Origin Place Names

This is a list of place names in which the origin is Brythonic.
type
usage
origin
Breizh (Island & Region) Breton
Breton form of Britain and Brittany. Great Britain is called Breizh-Veur in Breton.
Bretagna (Region & Island) Italian
Italian form of Britain and Brittany. Great Britain is called Gran Bretagna in Italian.
Bretagne (Region & Island) French, German, Dutch
French form of Britannia (see Britain). In French this typically refers to the region known as Brittany, while Great Britain is called Grande-Bretagne.
Bretaigne (Island & Region) Medieval French
Old French form of Britannia (see Britain).
Bretaña (Region & Island) Spanish
Spanish form of Britain and Brittany. Great Britain is called Gran Bretaña in Spanish.
Britain (Island) English
From Britannia, the Latin name for the island of Great Britain, the land of the Britons. It derives from the name of the Britons, recorded in Greek in the 4th century BC as Πρεττανική (Prettanike), and reconstructed as Proto-Brythonic *Pritanī, possibly meaning "tattooed people".
Britaniya (Island) Russian, Bulgarian
Russian and Bulgarian form of Britain.
Britannia (Island) Ancient Roman
Latin form of Britain.
Britannien (Island) German, Swedish, Danish
German, Swedish and Danish form of Britain.
Brittannië (Island) Dutch
Dutch form of Britain.
Brittany (Region) English
From Britannia (see Britain). This is the name of a region in northwestern France, so called because many Britons settled there after the fall of the Western Roman Empire. It had earlier been called Armorica. In the Middle Ages it was sometimes called Britannia Minor to distinguish it from the island of Great Britain. In French, both the island and the region are called Bretagne.
Buriten (Island & Country) Japanese
Japanese form of Britain.
Caerfyrddin (Settlement) Welsh
From Welsh caer "fort" and Moridunum. This is the name of a town in southern Wales.
Carmarthen (Settlement) English
English form of Caerfyrddin.
Dyfrdwy (River) Welsh
Compound of Old Welsh dwfr "water" and duiu "god". This is the Welsh name of the River Dee.
Moridunum (Settlement) Brythonic (Latinized)
From Brythonic *mori "sea" and *dūnom "rampart, hill fort". This was the name of a Roman-era fort in southern Wales. It is now known as Caerfyrddin.
Trefor (Settlement) Welsh
Means "big village" from Middle Welsh tref "village" and maur "large". This is the name of a few towns in Wales.