The Irish Mob War is the name given to conflicts throughout the 1960s between the two dominant Irish-American organized crime gangs in Massachusetts: the Charlestown Mob in Boston, led by brothers Bernard and Edward "Punchy" McLaughlin, and the Winter Hill Gang of Somerville (just north of Boston) headed by James "Buddy" McLean and his associates, Howie Winter and Joe McDonald. It is widely believed that the war began when George McLaughlin tried to pick up the girlfriend of Winter Hill associate Alex "Bobo" Petricone, also known as actor Alex Rocco. McLaughlin was then beaten and hospitalized by two other Winter Hill members. Afterward, Bernie McLaughlin went to Buddy McLean for an explanation. When McLean refused to give up his associates, Bernie swore revenge but was soon killed by McLean in Charlestown City Square.