Breton is a Southwestern Brittonic Celtic language spoken in Brittany. Breton is most closely related to Cornish, both being Southwestern Brittonic languages. The Bretons are an ethnic group located in the region of Brittany in France. If you are looking for some cat names for your male or female kittens, why not check out our collection of Breton cat names. These traditional Breton names are cool and different, they make good names for your little kitties.