eather - What does it mean?

Adverb

(-)

*{{quote-book|year=1838|author=William Makepeace Thackeray|title=Memoirs of Mr. Charles J. Yellowplush|chapter=|edition= citation

|passage=We are marters, both of us, to prinsple; and every body who knows eather knows that we would sacrafice anythink rather than that. }}