"whose fame Above there in the world should welcome be"

(Canto 16, lines 41-42)

Before the battle at Montaperti, Tegghiaio tried to dissuade the Florentine Guelfs from combat with the Ghibellines of Siena, thinking that they would surely lose. His advice was not heeded, and accordingly, the Guelfs were defeated at Montaperti.