Brythonic

[ bri-thon-ik ]

/ brɪˈθɒn ɪk /

P-Celtic, especially that part either spoken in Britain, as Welsh and Cornish, or descended from the P-Celtic speech of Britain, as Breton.

of or belonging to P-Celtic.

Also Britannic, Brittonic.

Origin of Brythonic

First recorded in 1880–85; Brython + -ic

Hence some would be local Goidelic divinities, others, classed with these, local Brythonic divinities.

The Religion of the Ancient Celts |J. A. MacCulloch
The same original pagan character is shown in the re-birth episodes existing in Brythonic literature.

The Fairy-Faith in Celtic Countries |W. Y. Evans Wentz
The Goidelic dialects have preserved the vowels of accented syllables on the whole better than Brythonic.

Encyclopaedia Britannica, 11th Edition, Volume 5, Slice 5 |Various
In modern phrase, the Goidelic, not the Brythonic branch of the Celtic race.

The Christian Church in These Islands before the Coming of Augustine |George Forrest Browne

In any case they had been conquered by Brythons and had become Brythonic in speech from the fifth century onwards.

The Religion of the Ancient Celts |J. A. MacCulloch

Brythonic

/ (brɪˈθɒnɪk) /

the S group of Celtic languages, consisting of Welsh, Cornish, and Breton

of, relating to, or characteristic of this group of languages

Popular name: Brittonic