Benjamin Thomas "Ben" Barnes (born 20 August 1981) is an English actor. He is known for his portrayal of Caspian X in The Chronicles of Narnia films Prince Caspian and The Voyage of the Dawn Treader, for playing the title character in the 2009 adaptation of Dorian Gray, for his supporting roles in the films The Words and The Big Wedding, and for his portrayal of American Founding Father Samuel Adams in the 2015 miniseries, Sons of Liberty''.