Early Life
Jaehaerys was the third son of King Aenys and Alyssa Velaryon. During the Faith Militant uprising, when Aenys thought King's Landing too unsafe, he fled to Dragonstone with his wife and all his children except for his eldest two, Aegon and Rhaena, who were in the Westerlands at this time.
Dragonstone was held by Visenya Targaryen, whose counsel was for Aenys to bring "fire and blood" to the Faith of the Seven. Aenys, never the most robust, fell seriously ill. The Dowager Queen Visenya took over his care and Aenys briefly improved. Aenys then suffered a collapse when he learned his son and daughter were besieged at Crakehall, and died later. Upon his death Visenya mounted her dragon and flew to Pentos to retrieve her son Maegor.
Due to the plotting of Visenya, Maegor took the Iron Throne before Jaehaerys' eldest brother Aegon. Visenya kept Jaehaerys, his mother and sister hostage on Dragonstone for two years while her son fought the Faith Militant. Maegor took Jaehaerys' older brother Viserys with him as a squire and hostage to ensure Alyssa's good behavior.
Prince Aegon fought Maegor I to reclaim his father's throne, but was slain by Maegor at the Battle Beneath the Gods Eye.
In 44 AC, Visenya passed away. The chaos of her death gave Alyssa an opportunity to escape with Jaehaerys and Alysanne. She also took the Valyrian sword Dark Sister. They eventually found sanctuary at Storm's End. Maegor, as punishment, had her son Prince Viserys tortured to death, leaving his mutilated body in the courtyard of King's Landing to rot.
By 48 AC the realm had had enough of Maegor's tyrannical rule. Jaehaerys, the last surviving son of King Aenys, put forth a new claim for the Iron Throne and was supported by Robar Baratheon, the Lord of Storm's End whom Jaehaerys named Protector of the Realm and Hand of the King.
After Maegor's mysterious death on the Iron Throne, Jaehaerys was crowned at the age of fourteen and wed to his sister Alysanne.
Reign
Jaehaerys inherited from his uncle's reign a war with the Faith Militant, known as the Faith Militant uprising. Maegor had used brutal methods to eradicate the rebellion, such as placing bounties on the heads of all members of the Faith Militant, but the rebellion had continued. Jaehaerys instead pacified the rebellion with the offer of amnesty for all participants and the disbanding of the Faith Militant. The offer was accepted and the orders disbanded on the condition that the Iron Throne would always defend the Faith of the Seven. This act earned him the name "the Conciliator." Jaehaerys later in his reign also took away the right of the Faith to conduct criminal trials. This pleased many as there had often been complaints of unscrupulous septries and septons making free with the wealth and property of their neighbors and those they preached to.
Jaehaerys has ruled for 32 years so far. Jaehaerys brings to the realm a time of great peace and prosperity, aided by his beloved sister-wife, Good Queen Alysanne. Alysanne convinced him to abolish the lord's right to the first night. Alysanne was Jaehaerys' great love, while his greatest friend was Septon Barth. Barth worked in the Red Keep's library due to his keen intelligence. The young Jaehaerys, who loved to read became acquainted with Barth, who attended the King's books and records.
Jaehaerys so far has reformed the realm more than any king who lived before. Jaehaerys created a unified legal code, so that from the North to the Dornish Marches the realm would share common law. Great works were implemented to improve King's Landing, such as sewers, drains and wells. He believed the fresh water and the flushing away of offal and waste was essential to a city's health. A vast network of roads was built and became known as the Kingsroad, and the king and queen were known to stay at the inn at the crossroads during their journeys, so much so that afterwards it was called the Two Crowns.
Such is Jaehaerys' wisdom and skill at diplomacy that he even managed to negotiate a truce and bring peace between Houses Bracken and Blackwood, two houses whose animosity has lasted for well over two thousand years.
Jaehaerys is known for his love of travel, and once visited the North with Queen Alysanne, six dragons and half his court. It is during Jaehaerys' reign that the Night's Watch castle Deep Lake was built, which was paid for by his wife's jewels and built by men Jaehaerys sent north.
It is currently 80 AC ....