Commentary Purg XIV 43-45

Beginning with the glosses found in the Codice Cassinese (DDP Cassinese.Purg.XIV.43), this porcine part of the Casentino is associated with the Conti Guidi (see C.Inf.XXX.58-61) and in particular with the branch of the family who ruled in Porciano, a fortified town near Mt. Falterona along the shallow stream that will grow to become the Arno.  Non-Tuscan readers may be surprised at commentators' certainty about the identities of all the unnamed towns or cities referred to in this part of the diatribe, but Dante counts on a reader familiar with the major points of habitation along the river.