Stephen Flemmi
American mobster
Stephen Joseph Flemmi (born June 9, 1934) is an American former mobster and convicted murderer and was a close associate of Winter Hill Gang boss Whitey Bulger. Beginning in 1975, Flemmi was a top echelon informant for the Federal Bureau of Investigation (FBI).
Despite delivering a great deal of intelligence about the inner workings of the Patriarca crime family, Flemmi's own criminal activities proved a public relations nightmare for the FBI. He was ultimately brought up on charges under the Racketeer Influenced and Corrupt Organizations Act, and pleaded guilty in return for a sentence of life in prison.
Early life
Stephen Joseph Flemmi was the eldest of three sons (the two brothers were Michael Flemmi and Vincent Flemmi) born to Italian American parents Giovanni "John" Flemmi (1892–1991), an immigrant from Bari, Apulia, and Mary Irene (née Misserville) Flemmi (1912–2000), who was born in Massachusetts to a family from Ceccano, Lazio. He was raised in the Orchard Park tenement located at 25 Ambrose Street in the Roxbury neighborhood of Boston, Massachusetts. His father was a bricklayer and veteran of the Royal Italian Army during World War I, and his mother was a full-time homemaker.
Flemmi was first arrested at the age of 15 on a charge of carnal abuse, and he later served time in a juvenile detention facility for assault. He enlisted in the Army in 1951 at the age of 17 and served two tours of duty in Korea with the 187th Airborne Regimental Combat Team. Flemmi was awarded the Silver Star and Bronze Star Medal decorations for valor and honorably discharged in 1955.
Criminal career
After leaving the military, Stephen Flemmi, along with his brother Vincent, joined the Roxbury Gang in the late 1950s.
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Named sources, stable identifiers and responsible institutions provide the strongest route from overview to verifiable evidence. The source revision retrieved here is dated Aug 16, 2026. The linked authority identifier is Q3973179. VIAF identifies the subject as 301892581. The Library of Congress control number is no2013051183. 3 of 3 selected statements include explicit references; 0 carry qualifiers and 0 use preferred rank. The first chronological checks are 1934, 1975, 1892 and 1991.
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