Terence Wilton Terence Wilton first appeared at the theatre in 2013 when he played the role of Admiral von Schreiber in The Sound of Music, directed by Rachel Kavanaugh. Plays and roles Henry IV Part I (2004) Earl of Worcester Twelfth Night (2005) Antonio A Midsummer Night's Dream (2004) Theseus Cymbeline (2005) Belarius The Sound of Music (2013) Admiral von Schreiber