Where does “Kelvin” come from?

Kelvin (Cebuano) comes from English Kelvin, from Scottish Gaelic abhainn, from Old Irish aub, from Proto-Celtic abū, from Proto-Indo-European h₂ep- — water, body of water.

Ancestry of “Kelvin”, step by step

StepLanguageWordMeaning
1EnglishKelvinAlternative letter-case form of kelvin
2Scottish Gaelicabhainnriver, stream
3Old Irishaubriver
4Proto-Celticabūriver
5Proto-Indo-Europeanh₂ep-water, body of water
Every word from Proto-Indo-European h₂ep- →Every word from Proto-Celtic abū →Every word from Old Irish aub →