Sir Toby Belch
a character in Shakespeare's Twelfth Night. He is the uncle of Olivia, a rich countess. He is a type of the jolly roisterer of the period.
Of Sir Toby himself--that most whimsical, madcap, frolicsome old toper, so full of antics and fond of sprees, with a plentiful stock of wit and an equal lack of money to keep it in motion,--it is enough to say, with one of the best of Shakespearean critics, that "he certainly comes out of the same associations where the poet Falstaff holds his revels"; and that though "not Sir John, nor a fainter sketch of him, yet he has an odd sort of a family likeness to him."--Hudson.
Volume V · Aiton’s Encyclopedia