Robert Baratheon is a major character in the first season. He is played by starring cast member Mark Addy, and debuts in the series premiere. Robert Baratheon was the ruler of the Seven Kingdoms, formally styled as Robert of the House Baratheon, the First of His Name, King of the Andals and the First Men, Lord of the Seven Kingdoms and Protector of the Realm. He took the throne through conquest in the war known as Robert's Rebellion. Robert was a great warrior in his youth. He killed Rhaegar Targaryen, Prince of Dragonstone, at the Battle of the Trident. After the war, Robert married Cersei Lannister to cement an alliance with House Lannister to hold the kingdoms together, but the marriage is loveless. Robert and Cersei have three children: Joffrey, Myrcella and Tommen. Unbeknown to Robert, all three were actually fathered by Cersei's twin brother, Jaime Lannister. Robert found the winning of his kingdom far more fulfilling than the running of it, and spent much of the next seventeen years whoring, drinking and hunting. So it is his small council that is delegated the tedious tasks of ruling. He is a childhood friend of Eddard Stark and considers him his true brother. He names Ned Hand of the King when the previous Hand dies in mysterious circumstances. Eddard launches an investigation and discovers that his predecessor was scrutinising the parentage of Cersei's children. Fearful of exposure, Cersei instructs Robert's squire, Lancel Lannister, to give him too much wine while hunting. Robert is fatally wounded by a boar and succumbs to his injuries soon afterwards. Robert names Eddard protector of the realm just before his death. Cersei then ignores the proclamation, has Eddard arrested, and seizes the throne for her son, Joffrey. The resulting dispute leads to the War of the Five Kings.