Where does “Wales” come from?

Wales (German) comes 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, from Proto-Germanic agwjō — water.

Ancestry of “Wales”, step by step

StepLanguageWordMeaning
1EnglishWalesThe area in which the Welsh language and culture predominated, roughly coincident with the modern country
2Middle EnglishWales
3Old EnglishWēalasthe Welsh
4Old Englishwealhforeigner; Briton or Welshman; slave
5Old Englishīeġisland
6Proto-West Germanicauwjufloodplain; meadow; island
7Proto-Germanicawjōfloodplain; meadow; island
8Proto-Germanicagwjō
9Proto-Indo-Europeanh₂ékʷeh₂water
Every word from Proto-Indo-European h₂ékʷeh₂