bartholomew (boar) pig, n. — Green’s Dictionary of Slang

bartholomew (boar) pig n.

[SE Bartholomew-pig, roast pork sold at Bartholomew Fair (see prev.)]

a fat man.

c.1597		Shakespeare Henry IV Pt 2 II iv: Thou whoreson little tidy Bartholomew boar-pig, when wilt thou leave fighting o’ days, and foining o’nights, and begin to patch up thine old body for heaven?
1870		Brewer Dict. of Phrase and Fable 68: A Bartholomew pig. A very fat person.