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Frank DeSimone

American mobster (1909–1967)

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General referenceInterpretive dossier study · Crown Archives visual atlas
Record originEnglish Wikipedia
Text licenseCC BY-SA 4.0
Source revisionApr 29, 2026
Entity authorityQ507973 ↗
Source-derived summary

Frank A. DeSimone (July 17, 1909 – August 4, 1967) was an American mobster who was boss of the Los Angeles crime family from 1956 to 1967. DeSimone was the son of former don Rosario DeSimone. He was sometime referred to as "One Eye" because one of his eyes drooped. He was also related to Simone Scozzari and Joseph Civello.

Early life and education

Frank DeSimone was born in 1909 in Pueblo, Colorado. As a child, his family moved to Southern California. DeSimone graduated from the University of Southern California Law School.

Career

After passing the California bar exam, DeSimone became a lawyer in May 1933. DeSimone also became involved in the mob, working to orchestrate one of the many botched assassination attempts on Mickey Cohen. Jimmy Fratianno signaled DeSimone after a meeting with Cohen and DeSimone pulled up in a car with Frank Bompensiero, Leo Moceri, and another armed man.

Editorial summary

The public source identifies “Frank DeSimone” as american mobster (1909–1967). This brief keeps that definition visible, then builds a research path around Frank, DeSimone and American.

Editorial reviewA dependable orientation record for establishing vocabulary, names and a first evidence trail. The current lead gives the account dated anchors—1909, 1967, 1956, 1933—that can be checked directly. The linked authority record independently contributes the date 1909-07-17. Its value is orientation rather than verdict, with Frank, DeSimone and American providing the first useful test.
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A short description can identify a subject without explaining its stakes. For “Frank DeSimone”, the useful work is to connect “american mobster (1909–1967)” to the records capable of establishing context and consequence.

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 Apr 29, 2026. The linked authority identifier is Q507973. 1 of 1 selected statements include explicit references; 0 carry qualifiers and 0 use preferred rank. The first chronological checks are 1909, 1967, 1956 and 1933.

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Overview language is designed for orientation and should not be treated as a substitute for the evidence cited beneath it. The source lead contains qualifying language; that uncertainty should survive quotation, summary and reuse. Authority statements aid reconciliation but still require their own references, qualifiers and ranks to be checked.

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Use the entry as an orientation point, then follow its citations and revision history. Names, dates and institutional relationships should be checked against the original record.

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Source & attribution

This entry incorporates text from “Frank DeSimone” 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.