Where does “Unterwallis” come from?

Unterwallis (German) comes from German Wallis, from English Wales, from Middle English Wales, from Old English Wēalas, from Old English wealh, from Old English īeġ, from Proto-West Germanic auwju, from Proto-Germanic awjō — water.

Ancestry of “Unterwallis”, step by step

StepLanguageWordMeaning
1GermanWallis—
2EnglishWalesThe area in which the Welsh language and culture predominated, roughly coincident with the modern country
3Middle EnglishWales—
4Old EnglishWēalasthe Welsh
5Old Englishwealhforeigner; Briton or Welshman; slave
6Old Englishīeġisland
7Proto-West Germanicauwjufloodplain; meadow; island
8Proto-Germanicawjōfloodplain; meadow; island
9Proto-Germanicagwjō—
10Proto-Indo-Europeanh₂ékʷeh₂water

Words derived from “Unterwallis”

Every word from Proto-Indo-European h₂ékʷeh₂ →Every word from Proto-Germanic agwjō →Every word from Proto-Germanic awjō →