Along the Via Francigena, there are several places whose events are mentioned in the Divine Comedy.
In Val d'Arbia, the commemorative pyramid of Montaperti shows verses 80-81 from Canto XXXII of Hell, in which Dante meets Bocca degli Abati, a traitor to the Guelphs. The same battle is also mentioned in Canto X and described as so bloody and gruesome that it dyed the Arbia river red (Inferno, X, v. 85).
Linked to both Siena and Monteroni is Pia de 'Tolomei, to whom Dante dedicated Canto V of Purgatory.
Events at Radicofani and the gentleman brigand Ghino di Tacco are mentioned in Canto VI of Purgatory, in which the poet speaks of Benincasa da Laterina (known as the Aretino), killed by Ghino di Tacco himself.