This took me a long time to find again. I believe I found something similar on ganglandchicago, a cool new site. Unfortunately, the information may have appeared from where I've just found it, on Wikipedia, which isn't too trustworthy. In any case, 'Prio' is Ross Prio, who was an insanely feared Outfit capo who amassed a huge fortune, but was never in much of an administrative position as all the other capos would later be. I remembered this because I found it a few nights ago and took it down in my notes.
Although second to Outfit boss Sam Giancana, Ross Prio was consulted on all Outfit murder contracts. However, according to federal wiretaps, mobster Jackie "The Lackey" Cerone was heard warning mobsters to avoid Prio, who was known to be vacationing in the area at the time, as they prepared for the assassination of Giancana in Hollywood, Florida. This specific attempt on Giancana's life was later abandoned, reportedly by Prio himself who had been informed of Cerone's activities.
The ugly thing about this quote is it seems unfortunately similar to the story of the FBI tipping off Frankie the X Esposito that Cerone was going to kill him. Take it for what it is.
I keep notes on interesting stuff I find on the non-NY families. If you all ever need them, PM me.
