Easily my all-time favorite Targaryen king would be Jaehaerys the First of His Name AKA The Conciliator. He was easily the greatest king House Targaryen ever produced and many historians believed he was the greatest king Westeros has ever known. He ruled the Iron Throne for fifty-five years, which is longer than any living soul before or after him. He was crowned when he was just a fourteen-year-old kid, but he proved wise, charismatic, and just beyond his years. Like Robb Stark, Jaehaerys married for love instead of political gain, but unlike Robb Stark, Jaehaerys was able to get away with it because of the power and authority he wielded. His true love was his sister Alysanne, who was a wise and capable politician in her own right. He always listened to his queen and many of his decisions were influenced by her. They had thirteen children, but only nine of them grew into adulthood and four had children and grandchildren of their own. Later in his reign, Jaehaerys had one succession crisis after another as several of his children died from wars, diseases, and accidents. Eventually, Jaehaerys held a Great Council where the lords of Westeros decided who would succeed him, which turned out to be his grandson who would reign as Viserys I. After his queen died, Jaehaerys became a broken shadow of his former self and old age made his mind fade. He died peacefully in his bed, which is EXTREMELY rare in the Game of Thrones universe. He was sixty-nine years old and his death was felt across the Seven Kingdoms. Even Dorne, who were part-time enemies of the Targaryens at the time, mourned Jaehaerys’s death. You know someone was a truly great king if even his enemies mourned him. His reign was a time of unprecedented peace, prosperity, and justice that Westeros would never see again. Thanks to Jaehaerys’s efforts, his grandson inherited a secure throne, an overflowing treasury, and a legacy of goodwill from the people. No other king since has been on Jaehaerys’s level and he was one of the rare few who were truly worthy to rule the Iron Throne.