Bernardo Bembo, born 1433, died 1519 which was not a bad stretch for the era. He was a humanist, diplomat and statesman from Venezia. In 1474 he was appointed as ambassador to Firenze, the city that had evicted Dante while he was still alive but wanted his bones (or more likely his glory and reputation) after he was dead. Bembo promised Lorenzo de'Medici to do what he could to return the bones to Firenze. (Between 1441 and 1509 Ravenna was under the rule of Venezia.)

This didn't eventuate, but between 1481 and 1483 Bembo was the podestà and capitano del popolo of Ravenna. (The titles are hard to translate into anything modern; essentially he was the chief magistrate and representative of the common people against the nobility. A "Tribune of the Plebs". in Roman terms.)

During that time he renovated Dante's tomb. According to the book "Pietro Bembo on Etna: The Ascent of a Venetian Humanist", Bembo's motto was "virtus et honor" (virtue and honour). Parts of the renovation included these terms, including the words "Virtus et honor on a plaque that is now set in an exterior wall adjacent to the monument". I didn't see that, but it appears that the design was echoed in this (presumably bronze) attachment to the fence which surrounds the park that sits adjacent to the tomb.