Where does “o wey” come from?

o wey (Middle English) comes from Old English onweġ, from Old English on weġ — on one's way; on one's way; onward; on.

Ancestry of “o wey”, step by step

o wey traces back through two separate lines of ancestry.

via Old English onweġ

StepLanguageWordMeaning
1Old Englishonweġaway
2Old Englishon weġon one's way; on one's way; onward; on

via Old English aweġ

StepLanguageWordMeaning
1Old Englishaweġ
Every word from Old English on weġEvery word from Old English onweġ