Yes, I grew up hearing tetchy from my grandparents, as in "Oh, don't be so tetchy." But I don't think it was a western word unless it had been carried there. Both sides of my family lived in the Appalachian mountains before they migrated south to the Georgian highlands. They migrated from England and Scotland (documented) and possibly from near Germany or France (family anecdote) in the late 1600's and early 1700's to Virginia and Kentucky, then down to Georgia in the 1800's and early 1900's. My paternal grandmother spoke with a slight brogue until her death at 92 in the 1974. My own family's use of "reckon" and "yonder" in everyday speech still rings of the King's English from the 1600's.