Ross O'Hennessy (born 1974) is a Welsh actor. He is best known for his roles in Hollyoaks Later, Da Vinci's Demons, The Musketeers, and playing the blood thirsty Role of Sir Locke in Kurt Sutter's new international television series The Bastard Executioner. In 2015, he replaced Edward Dogliani as Lord of Bones in Season 5 of the HBO series Game of Thrones. Since appearing in Game of Thrones Ross O'Hennessy has been cast to play the vicious character of Carnage Cliff in the feature film adaption of the comic book Accident Man.
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