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Sammy Gravano

American mobster

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General referenceInterpretive dossier study · Crown Archives visual atlas
Record originEnglish Wikipedia
Text licenseCC BY-SA 4.0
Source revisionSep 23, 2026
Entity authorityQ923645
Source-derived summary

Salvatore "Sammy the Bull" Gravano (born March 12, 1945) is an American former mobster who rose to the position of underboss in the Gambino crime family of New York City before becoming a government witness. As the underboss, Gravano played a major role in prosecuting John Gotti, the crime family's boss, by agreeing to testify as a government witness against him and other mobsters in a deal. As part of the agreement, Gravano confessed to his involvement in at least 19 murders, although he was also responsible for a number of other crimes.

Originally an associate for the Colombo crime family, and later for the Brooklyn faction of the Gambino family, Gravano was part of the group in 1985 that conspired to murder Gambino boss Paul Castellano. Gravano played a key role in planning and executing Castellano's murder, along with John Gotti, Angelo Ruggiero, Frank DeCicco, and Joseph Armone.

Soon after Castellano's murder, Gotti elevated Gravano to become an official captain after Salvatore "Toddo" Aurelio stepped down, a position Gravano held until 1987 when he became consigliere. In 1988, he became underboss, a position he held at the time he became a government witness. In 1991, Gravano agreed to turn state's evidence and testify for the prosecution against Gotti after hearing the boss making several disparaging and untrue remarks about Gravano on a wiretap that implicated them both in several murders.

At the time, Gravano was among the highest-ranking members of the Five Families to break his blood oath and to cooperate with the government. As a result of his testimonies, Gotti and Frank LoCascio were sentenced to life imprisonment without the possibility of parole in 1992.

Editorial summary

This brief starts where responsible research should: with the source description of “Sammy Gravano” as american mobster. Everything that follows is an evidence route, not borrowed authority.

Editorial reviewA concise reference frame for defining the subject, testing terminology and identifying the institution closest to the evidence. The current lead gives the account dated anchors—1945, 1985, 1987, 1988—that can be checked directly. The linked authority record independently contributes the date 1945-03-12. The account is most persuasive where Sammy, Gravano and American can be independently traced.
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Why this record matters

The subject matters to the general reference register because the source frames it as american mobster. Its deeper value depends on whether names, dates, institutions and citations support that framing.

Evidence profile

Vocabulary and entity names are the principal evidence signals here, because they determine the precision of every later search. The source revision retrieved here is dated Sep 23, 2026. The linked authority identifier is Q923645. VIAF identifies the subject as 79140890. The Library of Congress control number is n92040897. 4 of 4 selected statements include explicit references; 0 carry qualifiers and 0 use preferred rank. The first chronological checks are 1945, 1985, 1987 and 1988.

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This entry incorporates text from Sammy Gravano” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.