Originally from Castelbuono, Sicily, where the family surname was Proetto, Francesco Lanza entered the U.S. through New York in the early 1900s. His family, including two-year-old Mariano Vincenzo, joined him in New York in February of 1905.
The family made its way west during the World War I years and settled in San Francisco by the start of Prohibition. A low-profile Mafioso, Lanza ran produce-related businesses and became a legal supplier of grapes to illegal wine-making operations across the U.S. He remained far in the background while more conspicuous underworld figures perished in Prohibition Era gangland conflicts.
In the 1920s, he became part-owner of a vineyard in Escondido, California. Nick Licata, a Mafia leader from the Los Angeles area, later partnered in that business. California Mafioso Aladena "Jimmy the Weasel" Fratianno recalled Lanza as San Francisco's regional Mafia boss and partner with Giuseppe Alioto in a restaurant at the city's Fisherman's Wharf.
Lanza died at the age of 64. Historian Christina Ann-Marie DiEdoardo noted that the apparent cause of Francesco Lanza's death was aplastic anemia, a blood disease that could have been treated through transfusions. "Ironically," DiEdoardo wrote, "this made him the only boss around during the Booze Wars who died because his blood stayed in his body..."
A couple of decades after Francesco Lanza's death, his son James became boss of the San Francisco crime family. Unnoticed by the early 1950s Kefauver Committee, his name came up during the McClellan Committee hearings later in that decade. It was believed that James Lanza traveled east for the 1957 Apalachin convention as representative of San Francisco but managed to escape the notice of authorities. His presence in New York City and Scranton, Pennsylvania, hotels at the time of the convention was noted. The FBI began watching Lanza in the late 1950s and conducted electronic eavesdropping on his operations in the early 1960s. A widely publicized U.S. Justice Department listing of U.S. Mafia leaders in the late 1960s named James Lanza as the boss of the San Francisco crime family. James Lanza died in February 2006 at the age of 104.
O'Haire, Michael, "San Francisco boss Lanza held key role with Colorado's Mafia," Informer: The History of American Crime and Law Enforcement, October 2021.
- "Mafia's leadership list updated by Justice Dept.," Palm Springs CA Desert Sun, Aug. 22, 1969, p. 7
- "San Francisco deaths," Oakland CA Tribune, June 15, 1937, p. 35.
- California Death Index, Ancestry.com.
- Demaris, Ovid, The Last Mafioso: The Treacherous World of Jimmy Fratianno, New York: Times Books, 1981, p. 137.
- DiEdoardo, Christina Ann-Marie, Lanza's Mob: The Mafia and San Francisco, Santa Barbara CA: Praeger, 2016.
- Hart, Arthur V., "Meeting of hoodlums, Apalachin, New York, November 14, 1957," FBI report, file no. 63-4426-171, NARA no. 124-90103-10092, July 8, 1958, p. 103.
- Investigation of Improper Activities in the Labor or Management Field, Hearings Before the Select Committee on Improper Activities in the Labor or Management Field, Part 32, 85th Congress, 2d Session, Washington, D.C.: U.S. Government Printing Office, 1958.
- Mudd, Herbert K. Jr., "La Cosa Nostra San Francisco Division," FBI report, Aug. 23, 1968, file no. 92-6054-2397, NARA no. 124-10297-10131, p. Cover-C.
- Passenger manifest of S.S. Sicilia, departed Palermo on January 26, 1905, arrived New York City on Feb. 10, 1905.
- Polk's Crocker-Langley San Francisco City Directory 1934, San Francisco: R.L. Polk & Co. of California, 1934, p. 635.
- SAC San Diego, "La Cosa Nostra AR - Conspiracy," FBI airtel, file no. 92-6054-1907, NARA no. 124-10222-10055, March 13, 1967, p. 4.
- SAC San Francisco, "Mariano Vincenzo Lanza, aka James Joseph Lanza," FBI memorandum, file no. 92-3432-87, NARA no. 124-10222-10385, Dec. 29, 1960.
- Social Security Death Index, Ancestry.com.