This author of Convivio married Gemma Donati, though he was in love with another woman whom he only met twice, and for whom he composed a collection of poems entitled La Vita Nuova. This author also wrote a work in which he sees three heads gnawing on Cassius, Brutus, and Judas Iscariot, in which this man is (*) guided by Vergil and Beatrice and sees the nine circles of hell. For ten points, name 
This author of Convivio married Gemma Donati, though he was in love with another woman whom he only met twice, and for whom he composed a collection of poems entitled La Vita Nuova. This author also wrote a work in which he sees three heads gnawing on Cassius, Brutus, and Judas Iscariot, in which this man is (*) guided by Vergil and Beatrice and sees the nine circles of hell. For ten points, name this Italian poet whose Divine Comedy has three parts: Paradiso, Purgatorio, and Inferno.
This author of Convivio married Gemma Donati, though he was in love with another woman whom he only met twice, and for whom he composed a collection of poems entitled La Vita Nuova.