Trimalchio is a character in the Roman "novel" The Satyricon by Petronius. He was a gaudy, fat man, newly rich and taken to extreme excess, but lovable, in a sort of Falstavian way. He was known for throwing lavish dinner parties, where his numerous servants would bring course after course of exotic delicacies.
The original title of F. Scott Fitzgerald's The Great Gatsby was Trimalchio in West Egg.