Where does “Pwllheli” come from?

Pwllheli (Welsh) comes from Welsh heli, from Proto-Brythonic *hal, from Proto-Celtic *sālos, from Proto-Indo-European *sḗh₂l — salt.

Ancestry of “Pwllheli”, step by step

Pwllheli traces back through two separate lines of ancestry.

via Welsh heli

StepLanguageWordMeaning
1Welshhelisalt water, brine, saline
2Proto-Brythonic*hal
3Proto-Celtic*sālossaltwater
4Proto-Indo-European*sḗh₂lsalt

via Welsh pwll

StepLanguageWordMeaning
1Welshpwllpool, pond, puddle, pit

Words derived from “Pwllheli

Every word from Proto-Indo-European *sḗh₂l