High Quality Content by WIKIPEDIA articles! Aniello John "Mr. Neil" Dellacroce (March 15, 1914 - December 2, 1985), also known as "Father O`Neil" and "The Tall Guy", was an Italian-American gangster and underboss of the Gambino crime family. A capo of his own crew for many years he rose to the position of underboss when Carlo Gambino moved Joseph Biondo aside.