Lefty had a son from his first marriage who didn't go by the last name Ruggiero. He's the guy depicted in the movie Donnie Brasco. You can't always go by last name, especially with these people.

If Lefty's daughter married a wiseguy named Rizzo, and they had a daughter named Ramona her name would be Ramona Rizzo, not Ruggiero. Ramona married a Jordanian so I assume Rizzo is her maiden name.