Yep, his mom's sister was/ is married to Marino.
What some dont know about the killing of hydell was that while he was held in a basement, Casso brought down a few gambino guys to witness first hand who authorized the hit on casso. I know gravano was there. Hydell told them ( with a bunch of bullets in his body) that it was a gambino authorized hit.
Hydell was a low life but didnt deserve to die that way,its barbaric. thats Taliban type shit.
To me, more ruthless than Casso were Eppolito and Caracappa who should rot in prison and then pissed on when they die. They knew full well what was going to happen to that kid.