Harry "Happy" Maione (1908 - February 19 1942) was a New York mobster who served as a hitman for Murder, Inc. (the enforcement arm of the National Crime Syndicate) during the 1930s. Maione was called "Happy" because he never smiled and his face displayed an eternal scowl. Wikipedia
The definitive Wikipedia entry for Harry Maione. Wikipedia is the biggest multilingual free-content encyclopedia on the Internet. en.wikipedia.org/wiki/Harry_Maione