E. Cobham Brewer 18101897. Dictionary of Phrase and Fable. 1898.
Tub-woman (A).
A drawer of beer at a country public-house.
1
The common people had always a tradition that the queens [Anne] grandmother had been a washerwoman, or, as Cardinal York asserted, a tub-womanthat is, a drawer of beer at a country publichouse.Howell: History of England; Anne, p. 171.