Decameron (1349-52, revised 1370-1371). The Decameron (subtitle: Prencipe Galeotto) is a collection of 100 novellas by Italian author Giovanni Boccaccio, probably begun in 1350 and finished in 1353. It is a medieval allegorical work best known for its bawdy tales of love, appearing in all its possibilities from the erotic to the tragic.