Non-English singer from the "Party-Giving Snobs" chapter of William Makepeace Thackeray's 1848 collection of satire, The Book of Snobs.
--a scrubby-looking, yellow-faced foreigner, with cleaned gloves, is warbling inaudibly in a corner, to the accompaniment of another. 'The Great Cacafogo,' Mrs. Botibol whispers, as she passes you by. 'A great creature, Thumpenstrumpff, is at the instrument--the Hetman Platoff's pianist, you know.'
To hear this Cacafogo and Thumpenstrumpff, a hundred people are gathered together-
"Cacafogo" from Spanish caca-fuego (fire pooper), was a name given to comic braggart characters in plays in the 1600 and 1700s.