Also could be they were afraid of being sued (or worse) if they used real names. Movies usually have a disclaimer to the effect that "all characters are fictitious...any resemblance to real people is unintended." That is, unless it was intended. That's probably why in "Goodfellas" Scorsese called Jimmy Burke Jimmy Conway, and Paul Vario Paul Cicero.
Ntra la porta tua lu sangu � sparsu, E nun me mporta si ce muoru accisu... E s'iddu muoru e vaju mparadisu Si nun ce truovo a ttia, mancu ce trasu.
