Matty 'The Horse' Ianniello was born on 18 June 1920 in New York City, New York, USA. He was married to Beatrice May. He died on 15 August 2012 in Old Westbury, Long Island, New York, USA.
On 4/7/72 Joe Gallo, a killer for the Colombo crime family, was murdered in Umberto's Clam House--a restaurant in New York's Little Italy that was owned by Ianniello's father--by four gunmen. One of them was later identified as a member of the Genovese crime family, which was locked in a deadly struggle with the Colombo family. Ianniello himself was a member of the Genovese organization and was in fact at the restaurant when Gallo was killed but denied any knowledge of the murder.