Originally Posted By: Turnbull
Lepke was executed in 1944, the first and only mob boss to die in the chair.

Well, there was also John "Cockeye" Dunn, although I don't know if he could be considered a boss or rather a second-in-command for Eddie McGrath. Also, Rosario Borgio, a rather prominent gangster in Akron, died on the chair, although I am not sure if he was Cosa Nostra or just a "black hand" gang; and Dominic Benigno, a boss from Cleveland in the first 20s, for a double murder/robbery, he was considered the first boss of the Mayfield Road Mob.

Several other gang bosses have been also executed, although not on the chair, but on the gallows:

Sam Cardinelli (Chicago)
Rocco Racco (Pennsylvania)
Charlie Birger (southern Illinois)

Just for the record

Willie Marfeo to Henry Tameleo:

1) "You people want a loaf of bread and you throw the crumbs back. Well, fuck you. I ain't closing down."

2) "Get out of here, old man. Go tell Raymond to go shit in his hat. We're not giving you anything."