Jon Snow Au: A King Since Infancy - Tumblr Posts
bringing this fun from Jon's individual blog
poor Jon, in his show verse he is about to go through a huge identity crisis
then I remember what I pulled on him for his rebellion lost verse… where Rhaegar won at the Trident….
depending on who brings him away from the Tower of Joy his name changes
Jon Targaryen if brought away by Ned
Jaehaerys Targaryen if brought away by the Kingsguard (or Lyanna if she lives)
Aemon Targaryen if brought away by Rhaegar
talk about not knowing who you are
@ofashesandthorns gets a starter for Jon's birthday (and I am indulging in one of my many Jon AUs)

Jaehaerys turned his head at the sound of someone approaching him. He knows that they would likely start to look for him, as the party was in his honor after all. It was not every day that a King was a year older. "Lady Margaery." he greets. "I thought that you would be enjoying the festivities?"
Jaehaerys was now 19 years of age, and was king for nearly as long, having ascended the throne as the last remaining son of Rhaegar Targaryen, and the only son by Rhaegar's second wife. When Robert Baratheon had perished from wounds given to him in his battle with the late Prince Rhaegar it had left the realm in turmoil until Lord Eddard Stark had brought Jaehaerys to the Red Keep.
"Is King's Landing treating you well?"