A sleek, good-tempered, jolly landlord. From Farquhar's comedy
of The Beaux' Stratagem.
“A regular British Boniface.” —The John Bull.
St. Boniface. The apostle of Germany, an Anglo-Saxon whose original
name was Winifrid or Winfrith. (680-750.)
St. Boniface's cup.
An extra cup of wine (to the health of the Pope). Pope Boniface, we
are told in the Ebrietatis Encomium,
instituted an indulgence to
those who drank his good health after grace, or the health of the Pope
of the time being. An excuse for an extra glass.
Source: Dictionary of Phrase and Fable, E. Cobham Brewer, 1894