Where does “Девон” come from?

Девон (Russian) comes from English Devon, from Old English Defenas, from Latin Dumnonii, from Proto-Celtic dubnos, from Proto-Indo-European dʰewbʰ-, from Proto-Indo-European dʰewh₂- — smoke; mist, haze.

Ancestry of “Девон”, step by step

StepLanguageWordMeaning
1EnglishDevonOne of a breed of hardy cattle originating in...
2Old EnglishDefenasDevonians
3LatinDumnoniiA tribe of Britannia
4Proto-Celticdubnosdeep; world
5Proto-Indo-Europeandʰewbʰ-deep
6Proto-Indo-Europeandʰewh₂-smoke; mist, haze
Every word from Proto-Indo-European dʰewh₂-