Glad to learn from Guest,PATSY, above, that "thee bist" for "you are", which my late first wife used to quote as previous generation talk for "you are" in the Forest of Dean area of Gloucestershire on the borders of Wales, where she was born in 1935, is still apparently current in not-too-far-distant Bristol. That same old neighbour who used it in her childhood would also say "Old Butt" or "Old Buttie" as a vocative where others would probably say "Mate".

~Michael~