Where does “quethow” come from?

quethow (Cornish) comes from Cornish -ow — Pluralization suffix, roughly equivalent to -s.

Ancestry of “quethow”, step by step

StepLanguageWordMeaning
1Cornish-owPluralization suffix, roughly equivalent to -s
Every word from Cornish -ow
quethow — Etymology, Origin & Word History | Etymology Explorer