Where does “Cornwallian” come from?

Cornwallian (English) comes from English Cornwall, from Old English Cornwealas, 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.

Cornwallian (English): Of or relating to Cornwall; A native or...

Definitions

  1. Of or relating to Cornwall; A native or...

Ancestry of “Cornwallian”, step by step

Cornwallian traces back through two separate lines of ancestry.

via English Cornwall

StepLanguageWordMeaning
1EnglishCornwallThe country of the Cornish, currently having the status of a royal duchy in England belonging to the male heir apparent to the reigning monarch, and consisting at least of the Cornwall County and the Isles of Scilly
2Old EnglishCornwealasCornwall, inhabitants of Cornwall
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

via English ian

StepLanguageWordMeaning
1Englishian
2IrishEoinJohn any of several people in the Bible
3Old IrishIohainJohn apostle
4LatinIōannēsJohn biblical persons
5Ancient GreekἸωάννης
6HebrewיוחנןYahweh is gracious
7Hebrewחנוןgracious, merciful, compassionate; passive...
8Moroccan Arabicخنونةmucus, snot
9Arabicخُنَّة
Every word from Proto-Indo-European h₂ékʷeh₂