Benny Squint was boss of the Genovese family, not underboss of the Gambino's. I'm not trying to be critical but I have seen a couple of mistakes like this in some of the articles you have posted. Out of curiosity, where do they come from?
Your right,its a mistake...heres the source:
http://ezinearticles.com/?Its-All-In-The-Name-&id=328041