Keir Gilchrist born Keir David Peters Gilchrist was born on September 28, 1992 in the London Borough of Camden, Camden Town,U.K. and is an English-born Canadian actor. He is known for playing Marshall Gregson on Showtime's original series "United States of Tara", Craig Gilner in the 2010 comedy-drama film "It's Kind of a Funny Story ".

Keir portrays the main protagonist role Sam Gardner in the Netflix Original Series Atypical

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