William is the Founder and Artistic Director of St. Louis Actors’ Studio and has been a working actor in theater for over 25 years. He has performed with The Classic Theater Company, American Ballet Theater, River City Players, Magic Smoking Monkey, The Goldenrod Showboat, The International Hemingway Festival, HotHouse Theatre and Muddy Waters. He spent six years with the Orthwein Theatre Company, appearing in several shows, including The Grapes of Wrath, Our Town, Hamlet, ER, Emergency Room and Harvey. He has appeared in countless Shakespeare productions, including Richard III, Much Ado about Nothing, Hamlet, A Winter's TaleAs you Like It, MacBeth, Othello and Antony and Cleopatra. STLAS roles include: Sir Thomas More in A Man for All Seasons, Earl Moss in Sam Shepard’s The Late Henry Moss and Ben in The Sunshine Boys. William has produced over 50 shows since starting STLAS including the New York premiere productions of Day of the Dog and four seasons of “LaBute New Theater Festival” at the 59E59 street theaters in Midtown Manhattan. He recently appeared as Bill in the STLAS world premiere production of Neil LaBute’s Here We Go Around The Mulberry Bush, George in Edward Albee’s Who’s Afraid of Virginia Woolf? (Theater Circle Award Nominee-Best Actor, Winner Best Comedy). Teach in David Mamet's American Buffalo (Theater Circle Award Nominee-Outstanding Production of a Drama) and Charlie Aikin in Tracy Lett's August: Osage County.(Winner Best Supporting Actor Comedy-Broadway World) as Mervyn in Martin McDonagh's A Behanding in Spokane((Theater Circle Award Nominee-Outstanding Supporting Actor in a Comedy), Horace in Lillian Hellman's classic, The Little Foxes (Theater Circle Award Nominee-Outstanding Production of a Drama, Ensemble) and most recently as Saul in Sam Shepard’s True West.

William was singled out as one of the top five Actors in St. Louis by the Post-Dispatch in its yearly "Go! List."