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Sean Grennan

Chicago, Illinois, U.S.

Chicago, Illinois, U.S.

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An actor for many years, Sean began writing for the theatre as co-librettist for the musical Phantom of the Country Opera, which had its world premiere at the Marriott Theatre in Lincolnshire, Illinois. He went on to debut five shows at the American Heartland Theatre in Kansas City –his comedies Beer for Breakfast and As Long As We Both Shall Live and his musicals (librettist/lyricist) Married Alive!, A Dog’s Life, and Another Night Before Christmas. In addition, Sean has had four world premieres at Peninsula Players Theatre in Wisconsin — Making God Laugh, The Tin Woman, Now and Then and A Rock Sails By. The last of which was part of the statewide festival, “World Premiere Wisconsin”.

Sean Grennan movies and TV shows

Smaller roles

  1. MINDHUNTERas Ken · 2017–2019#294TV show
  2. Law & Order: Special Victims Unitas Wilkins · 1999–present#85TV show
  3. Rudyas High School Assistant Coach · 1993#2,278movie
  4. The Untouchablesas Cop Cousin · 1987#1,339movie
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