Robert Sean Leonard was born February 28, 1969 in Westwood, New Jersey.

He won a Tony Award for Best Featured Actor in a Play for his performance in The Invention of Love in 2001.

His was also nominated for his leading role in Candida in 1993 and for his work opposite Philip Seymour Hoffman in Long Day's Journey Into Night in 2003.

A role as the teenaged son of Paul Newman and Joanne Woodward in the movie Mr. Bridge followed before Leonard returned to the New York stage to star in the Riverside Shakespeare Company's production of Romeo and Juliet and on Broadway in The Speed of Darkness.

His performance in the revival of Candida earned him a Tony nomination, and he also acted in Broadway productions of Philadelphia, Here I Come and Tom Stoppard's Arcadia.

Gregory House's sole good friend up until his resignation from the hospital and eventual death from Thymoma which he was officially diagnosed with in the Season 8 episode, Body and Soul.

Wilson acts as House’s conscience, sounding board, and the enabler of his abusive personality.

Stagestruck since the age of 11, Robert Sean Leonard acted Off-Broadway in Sally's Gone, She Left Her Name and made his Broadway debut as Eugene in Neil Simon's Brighton Beach Memoirs shortly after appearing in a small part in his first feature The Manhattan Project.

He landed a starring role in My Best Friend Is a Vampire but really drew raves for his sensitive portrayal of the would-be actor driven to suicide by his father in Peter Weir's Dead Poets Society.

Leonard's other Broadway credits include Breaking the Code, The Speed of Darkness, Philadelphia, Here I Come! He has appeared in guest roles in The Outer Limits and Wasteland as well. Roger Kadar on the television series Falling Skies.

, Arcadia, The Music Man, Born Yesterday and To Kill a Mockingbird. Leonard is married to equestrian Gabriella Salick, with whom he has a daughter.

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