In Assassin's Creed II, what is the surname of protagonist Ezio?

In Assassin's Creed II, the protagonist Ezio's surname is Auditore.

His full name is Ezio Auditore da Firenze, identifying both his family and his connection with Florence. The game follows Ezio from his youth in Renaissance Italy through his transformation into an Assassin and his conflict with the Templar order.

Ezio's family name is central to the story because the early plot is driven by the destruction of the Auditore household. Ezio's father, Giovanni, secretly serves the Assassins, but the family is publicly executed after a political conspiracy. Ezio then begins a long campaign to uncover the truth and pursue those responsible.

The game features historical figures such as Leonardo da Vinci, Lorenzo de' Medici, and Rodrigo Borgia. Their presence can make other Italian surnames feel like possible answers, but Auditore is the canonical surname attached to Ezio himself.