john robliotto was originally around the Genovese family. His proposal for membership was nixed because his brother was a cop.
He got with the Gambinos by endearing himself to Al Anastasia and killing Willie Morreti for him.
Don't know about being hit on the sneak...He was supposedly hit because of his support for Anastasia and to squash any discontent following the Anastasia hit in 57. He was knocked in 58. Tommy Rava in late 57. This effectively finished any would be opposition to Carlo Gambino as new boss. Everyone else who had issue with it (Dellacroce) fell into line