Salvatore was the middle name of my mother's first husband, his first name being
John. His parents were both from Italy. He and my mother named their son
John Richard, not
John Salvatore Jr. My (half) brother's wife once expressed gratitude that his middle name was not
Salvatore, as they had decided to name a first son after him, which they eventually did.
Anyway, I know that you're not in the US, but in the US, I think it has been and still is thought of as an Italian name and people would be surprised to see it on anyone not of Italian descent.