Where does “aiuel” come from?

aiuel (Old French) comes from Vulgar Latin aviolus, from Latin avus, from Proto-Celtic abū, from Proto-Indo-European h₂ep- — water, body of water.

Ancestry of “aiuel”, step by step

StepLanguageWordMeaning
1Vulgar Latinaviolusgrandfather
2Latinavusgrandfather; an ancestor, a progenitor, a...
3Proto-Celticabūriver
4Proto-Indo-Europeanh₂ep-water, body of water
Every word from Proto-Indo-European h₂ep- →Every word from Proto-Celtic abū →Every word from Latin avus →