The San Francisco Crime Family was formed after a large gang war, which started in 1928 and ended in 1932. The Lanza gang proved to be the strongest after murdering San Francisco gang leader Luigi Malvese on May 18, 1932. Francesco Lanza was the leader of the Lanza gang and became the first real crime boss of San Francisco. He divided his income from loansharking, gun running, prostitution, gambling and narcotics. Lanza founded the famous Fisherman's Wharf along with his partner Giuseppe Alioto. Lanza passed away of natural causes on July 14, 1937. He was 57 years old.