Well, Doug, feel free to call me Stephen da Radcliffe. The bald fact is that "da Vinci" without Leonardo is simply not his name, end of. He was an illegitimate child and, if you look him up, you'll find that he could have adopted another name to follow "Leonardo."

"If I read a report where the name Leonardo is used on its own, it could be Leonardo Da Vinci, Leonardo DiCaprio or one of a host of other well known Leonardos..."

Disingenuous nonsense, Doug. If you read a report where Leonardo is used on its own, and that report means to refer to Leonardo da Vinci, there will one hundred percent be a ton of context, art, sculpture, whatever, that will confirm to you that the reference is to the great artist and no-one else. No-one is going to mention Leonardo in isolation if they mean Leonardo diCaprio, yer daft bugger. The bottom line here is that his surname is not "da Vinci," any more than your name is Doug da Ashton-under-Lyme or wherever it is you come from.