Ciaran Hinds (born 9 February 1953) is an Irish film, television, and stage actor. A versatile character actor, he has featured in films such as Road to Perdition, Munich, There Will Be Blood, Harry Potter and the Deathly Hallows – Part 2, Tinker Tailor Soldier Spy, Frozen, Silence and Justice League, in which he portrayed the main antagonist Steppenwolf. His television roles include Gaius Julius Caesar in the series Rome, DCI James Langton in Above Suspicion, and Mance Rayder in Game of Thrones. As a stage actor Hinds has enjoyed spells with the Royal Shakespeare Company, the Royal National Theatre in London, and six seasons with Glasgow Citizens' Theatre, and he has continued to work on stage throughout his career. Hinds was born in Belfast, Northern Ireland. Brought up as a Catholic in North Belfast, he was one of five children and the only son of his doctor father and schoolteacher and amateur actress mother. He was an Irish dancer in his youth and was educated at Holy Family Primary School and St. Malachy's College. After leaving St. Malachy's, he enrolled as a law student at Queen's University, Belfast, but was soon persuaded to pursue acting and abandoned his studies at Queen's to enroll at the Royal Academy of Dramatic Art, finishing in 1975. Hinds lives in Paris with Hélène Patarot. They met in 1987 while in the cast of Peter Brook's production of The Mahabharata and have a daughter, Aoife, born in 1991. Hinds is a friend of Liam Neeson and served as a pallbearer at the funeral of Neeson's wife, actress Natasha Richardson, in upstate New York in 2009.

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