The Longfellow translation. This is the translation at the center of the plot of the recent bestseller "The Dante Club" by Matthew Pearl. Acceding to Wikipedia: "Durante degli Alighieri ( c.1265 - 1321), commonly known as Dante Alighieri, was a Florentine poet of the Middle Ages. His central work, the Divina Commedia (originally called "Commedia" and later called "Divina" (divine) by Boccaccio hence "Divina Commedia"), is often considered the greatest literary work composed in the Italian language and a masterpiece of world literature. In Italian he is known as "the Supreme Poet" (il Sommo Poeta). Dante, Petrarch and Boccaccio are also known as "the three fountains" or "the three crowns". Dante is also called the "Father of the Italian language"."