Jaehaerys Targaryen (son of Aegon II)

"The grief and rage of losing a child could burn down the world."

- - Catelyn Stark Prince Jaehaerys Targaryen is an unseen character in Game of Thrones. He is long dead by the time of the series. He was a Prince of the House Targaryen dynasty.

Biography
Jaehaerys was the eldest son of Aegon II Targaryen and his sister-wife Helaena Targaryen. He presumably had a very close relationship with his mother. After Lucerys Velaryon was killed by Jaehaery's uncle Aemond Targaryen, his step-father Daemon Targaryen hired two assassinates to kill Aegon's and Helaena's children. One was a former Goldcloak and the other was a rat-catcher who knew all the sewers around King's Landing. This meant that they both had perfect recognition of the layout of the Red Keep. After breaking into the royal apartments, they found Helaena putting her children to bed. They demanded a son for a son. Helaena pleaded that kill her instead, but they refused. She named Jaehaerys' younger brother Maelor as the victim. However, Cheese just told Daemon that his mother wanted him dead, and some believe it Helaena named Daemon because Jaehaerys was heir to the Iron Throne, or because Daemon was just to young to understand. This request became an act of defiance against the Greens, as Blood just beheaded Jaehaerys with a single blow. By the time the guards had came, the Queen was cradling her son's body. Jaehaerys' death would eventually led to his mother's insanity and suicide.