1838 C. Gilman 124 Old mistress used to say there wan't such a waluable as that this side of Ingland.
1860 D. D. Emmett (sheet music) Old Missus marry ‘Will-de-weaber’... Here's a health to the next old Missus.
1941 in G. P. Rawick (1972) VII. 281 A house nigger come out from Old Mistress on a hoss.