The presence of Cerberus in the third circle of hell is another instance of an ancient Greek mythological figure adapted and intensified by Dante; as with
Charon and
Minos in previous cantos, Cerberus is a figure associated with the
Greek underworld in the works of Virgil and
Ovid who has been repurposed for its appearance in the
Commedia. Virgil quieting Cerberus with mouthfuls of dirt is an allusion to Virgil's
Aeneid, where the hound is similarly silenced with honey cakes. It is not known whether the man named Ciacco actually existed or was invented by Dante. His name has been read as a play on the word for "pig" (), although the tone with which Dante addresses him indicates that it may be a proper name and not mockery.
Giovanni Boccaccio, another writer from Dante's home town of Florence, also uses the character in
The Decameron, although it is not clear if this is based on the
Inferno or on shared familiarity with a historical figure. Dante's conversation with Ciacco is used to recount the strife between the Guelph and Ghibelline factions who had been vying for control of Florence during Dante's lifetime; the
Commedia was written while Dante was exiled from the city having been
sentenced to death in absentia. By the time of Dante's exile, the Guelphs, who had supported the influence of the papacy in Italy over the Ghibelline preference for the
Holy Roman Emperor, had splintered into
"white" and "black" factions divided over support for pope
Boniface VIII. The white Guelphs, to which Dante belonged, favoured Florentine autonomy and opposed Boniface; their initial control of the city was ended when the black Guelphs, aided by papal troops, regained the city in 1301. ==Analysis==