Tommaso "The Ox" Petto (1879–1905) was a New York mobster and leading hitman in the Morello crime family during the early 1900s.
Born around 1879, Petto lived in the Williamsburg section of Brooklyn. His nickname "The Ox" came from his massive head and frame. Petto's nominal profession was that of a suit presser, but his real job was working for the Morello family. The Morello family was a Sicilian clan in Manhattan that became infamous for killing their rivals, stuffing them in barrels, and leaving them on street corners.wikipedia