William S. O'Sullivan
(1928-1971)
American criminal and mobster
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William S. O'Sullivan (January 31, 1928 — March 28, 1971) was an Irish-American loanshark and longtime enforcer for Donald Killeen, the head of the Irish mob in South Boston, Massachusetts. O'Sullivan also acted as a mentor to a young James J. Bulger, who grew up to become the leader of Boston's Winter Hill Gang.
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| Born |
31 January 1928 South Boston, Massachusetts
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| Died |
28 March 1971 (aged 43)
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| Zodiac | Aquarius |
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