Brittonic languages
Language family
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The Brittonic languages form one of the two branches of the Insular Celtic language family; the other is Goidelic. It comprises the extant languages Breton, Cornish, and Welsh. Wikipedia
Linguistic classification: Indo-European > Celtic > Insular Celtic > Brittonic
Proto-language: Common Brittonic
Subdivisions: Western Brittonic; Southwestern Brittonic; Pictish †