an' they left one'n the sarvant gals as well for comp'ny for the housekeeper, but the tother sarvant gals they took wid 'em. — The Robber and the Housekeeper.
A colloquial contraction of the other, and formerly a contraction for that other
(pronoun or adjective.) 13th century. From Middle English, from the incorrect division of thet other (“the/that other”). Compare Scots tither; English tone. More at that, other.