"In her entreaty she besought Lucia"

Saint Lucia
Public DomainSaint Lucia - Credit: Domenico di Pace Beccafumi

(Canto 2, line 97)

Lucia was a saint who according to tradition died a martyr in 303 or 304. She is a patron saint of those who are blind. Dante had a great veneration for this particular saint: in the Convivio, book 3 chapter 9, he describes an ailment of the eyes he had suffered from, and it might be that he hoped for the protection of Lucia.