Robert Clohessy_
Updated Feb 16, 2026
Details
Known For
Actor
Popularity
1.8
DROPTHE_ GOSSIP
Robert Clohessy is known for acting.
Biography
Robert Clohessy (born June 10, 1957) is an American actor. He is best known for playing Correctional Officer Sean Murphy on the HBO prison drama Oz from seasons 3–6, in addition to playing Officer Patrick Flaherty on the NBC police procedural Hill Street Blues, Warden Boss James Neary on the HBO crime drama Boardwalk Empire for the first two seasons and Lieutenant Sid Gormley on the CBS police drama Blue Bloods.
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Frequently Asked Questions
What is Robert Clohessy known for?
Robert Clohessy is primarily known as an actor. Robert Clohessy (born June 10, 1957) is an American actor. He is best known for playing Correctional Officer Sean Murphy on the HBO prison drama…
Where can I find more information about Robert Clohessy?
You can find more about Robert Clohessy on TMDB. Their full profile and filmography is available on this page.