Now I´m not so sure if the name "William Devino" actually appeared in the book. I don´t have the book here. So it may be that Hill, who perhaps never knew Billy Batts´s real name, threw "William Devino" out in an interview while being drunk or high, after the book had been published. Or the original source was just a confused kid, writing articles on Wikipedia.
It's just "Billy Batts" in the book. "Devino" certainly does sound like a plausible drunken recollection of the uncommon "Bentvena".
