Examples from the Web for brythonic
Hence some would be local Goidelic divinities, others, classed with these, local Brythonic divinities.
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.
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.
British Dictionary definitions for brythonic
Word Origin and History for brythonic
"of the Britons, Welsh," 1884, from Welsh Brython, cognate with Latin Britto (see Briton). Introduced by Welsh Celtic scholar Professor John Rhys (1840-1915) to avoid the confusion of using Briton/British with reference to ancient peoples, religions, and languages.