Erysichthon

In Greek mythology, King Erysichthon of Thessaly was the son of Triopas. He cut down trees in a grove, sacred to Demeter. She punished him by placing Aethon, the god of famine, in his stomach, making him permanently hungry. He hold all his possessions, including his daughter, Mestra, to buy food but was still hungry. Mestra was freed from slavery by Poseidon, who gave her the gift of shape-shifting to escape her bonds. Erysichthon sold her numerous times to make money to feed himself. Eventually, Erysichthon ate himself in hunger.

Ovid. Metamorphoses VIII, 738-878.