Where does “waliau” come from?

waliau (Welsh) comes from Welsh wal, from Old English weall, from Proto-Germanic wallaz, from Latin vallum, from Proto-Indo-European wēl- — to see, perceive.

Ancestry of “waliau”, step by step

StepLanguageWordMeaning
1Welshwalwall; Soft mutation of gwal
2Old Englishweallwall; fervour; uproar; boiled or mulled wine
3Proto-Germanicwallazwell, spring; wall, rampart, entrenchment
4Latinvallumwall, rampart, entrenchment
5Proto-Indo-Europeanwēl-to see, perceive
Every word from Proto-Indo-European wēl-