Claudia Auditore da Firenze

Claudia Auditore da Firenze is the little sister of Ezio. She has been too spoiled by Giovanni: she is smart and kind, but she is immature. She is portrayed by the same actress in both Assassin's Creed II and Assassin's Creed: Lineage.

Assassin's Creed: Lineage
Claudia Auditore is a florentine young girl of a noble family living during the 15th century in Italy: the Renaissance. She is the daughter of Giovanni Auditore, an Assassin, a "profession" of his father that she doesn't know.

Assassin's Creed II
After the tragic events that happened for the Auditore family, Ezio will protect her.