My great grandfather was actually born with the last name Pirello. He was born illegitamate and his parents couldn't afford him so they put him into an orphanage. At the orphanage they picked a name off the map of Italy...Oneglia (it's a port city). So eventually his real parents had enough money and adopted him (yeah I know, how dumb). However, it cost too much for them to change his last name back to Pirello. So the family kept Oneglia.