<P> Introduced in A Game of Thrones (1996), Jaime is a knight of the Kingsguard and a member of House Lannister, one of the wealthiest and most powerful families in the fictional kingdom of Westeros . Although he first appears to be unscrupulous and amoral, he later proves to be far more complex, honorable and sympathetic . </P> <P> Jaime is portrayed by Nikolaj Coster - Waldau on the HBO series Game of Thrones . He was nominated for a Saturn Award for Best Supporting Actor on Television, a Critics' Choice Television Award for Best Supporting Actor in a Drama Series and a People Choice Awards Favorite TV Anti-Hero for his performance in the show's third season, and for a Primetime Emmy Award for Outstanding Supporting Actor in a Drama Series for his performance in the show's seventh season . He and the rest of the cast were nominated for Screen Actors Guild Awards for Outstanding Performance by an Ensemble in a Drama Series in 2012, 2014, 2015, 2016 and 2017 . </P> <P> Jaime was born shortly after the birth of his twin sister Cersei . The two were inseparable as children, and at an early age began an incestuous affair that continued into adulthood and even after Cersei's marriage to Robert Baratheon . At the age of fifteen he participated in the battle against the Kingswood Brotherhood, squiring for Lord Sumner Crakehall, and was subsequently knighted by Ser Arthur Dayne . While returning to Casterly Rock, he visited Cersei at King's Landing, who persuaded him to join the Kingsguard in order to be close to her . Jaime was accepted into the Kingsguard, but Tywin resigned as Hand of the King, taking Cersei with him back to Casterly Rock . Jaime quickly realises that Aerys named him to the Kingsguard solely to strip Tywin of his heir . Jaime becomes further disillusioned after witnessing Aerys burn Rickard and Brandon Stark alive and overhearing him raping his sister - wife Rhaella . When Tywin begins sacking King's Landing at the climax of Robert's Rebellion, Jaime realises that Aerys intends to burn King's Landing with wildfire and kills him, almost immediately being discovered by Tywin's men . Robert Baratheon later pardons Jaime for breaking his vows and names him to his own Kingsguard . Although Jaime considers his assassination of Aerys as his greatest act, his motives for killing him remain unknown to the rest of the realm and he is given the insulting moniker "Kingslayer". </P> <P> Several years later, he and Tyrion rescue a young woman, Tysha, from outlaws, and Tyrion secretly marries her . When Tywin finds out he orders Jaime to tell Tyrion that he staged the incident in order for Tyrion to lose his virginity . Though it is unknown if Jaime was aware that Tywin subsequently forced Tyrion to watch Tysha be gang - raped by his guards, Jaime carries a great amount of guilt for his unkindness to Tyrion in his later years . </P>

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