Commentary Par XIII 133-138

The two examples, in reverse order, reminded John Carroll (DDP Carroll.Par.XIII.129-142) of the father and son, Guido and Buonconte da Montefeltro.  Guido, according to Dante in Convivio (Conv.IV.xxviii.8), was saved, but then was registered as one of the damned in Inferno XXVII, his story presented in both texts as a sea voyage; his son, Buonconte, although suffering a cruel death, in his agony spoke the name of Mary, the 'rose,' and was saved (Purg. V).  Trucchi (DDP Trucchi.Par.XIII.139-142) makes the same point, but with less effect.  And see Pézard (Peza.1965.1), ad loc., for an attempt to locate both the rose and the ship of this passage in Convivio (Conv.IV.xxvii.7 and Conv.IV.xxviii.8).

For readers of Convivio, Dante has placed his former writing self among the Berthas and Martins (see [Par XIII 139]) of the world.  Perhaps recognizing ourselves described at [Par XIII 118-120], we may share that sense.