An Argento question

Dario Argento's mother Elda Luxardo is usually referred to as Brazilian. Her name, however, doesn't sound like it is a Portuguese one. So is she Brazilian-born from a family of Italian extraction? (There is an Italian maraschino drink called Luxardo, after the founder of the distillery which makes it; http://www.figuralminibottles.com/luxardo/luxardo.shtml)