Gangster Capone was recruited by members of the Five Points Gang in the early 1920s. Capone’s childhood friend, Lucky Luciano, was also originally a member of the Five Points Gang. Capone would rise to control a major portion of illicit activity such as gambling, prostitution, and bootlegging in Chicago during the early twentieth century. Frank Costello was another influential gangster. He was born in southern Italy but moved to America when he was four years old. He later changed his name from Francesco Castiglia to Frank Costello when he joined a gang at age 13. His name change led some people
Al Capone suspected of being involved. Torrio headed an essentially Italian organized crime group that was the biggest in the city, with Capone as his right-hand man. He was wary of being drawn into gang wars and tried to negotiate agreements over territory between rival crime groups. The smaller North Side Gang led by Dean O'Banion (also known as Dion O'Banion) was of mixed ethnicity, and it came under pressure from the Genna brothers who were allied with Torrio. O'Banion found that Torrio was unhelpful with the encroachment of the Gennas into the North Side, despite his pretensions to be a settler