Not a guess. I knew Nick when I worked at a jewelery store in Elmwood Pk, back in the 80s. I just knew him as Nicky the plumber. He would come around with stuff that needed fixing about once a month. He would hang around the workroom all day chewin the fat. I didn't realize he was Nick Palermo until his wake.
I knew Nicoletti by sight as well. I cooked or bussed in a half dozen restaurants in Northlake, Melrose and Franklin Parks ca. 72-76 we knew to keep his cigarette lit and not to spill coffee on him.