title: Jon Snow (character)
context: HBO's Game of Thrones has included in its adaptation many of the "hints" identified by this theory.[33] In the season 6 finale, "The Winds of Winter", Bran Stark has a vision of the past which shows Ned reuniting with a dying Lyanna in the Tower of Joy. Lyanna makes him promise to protect her son—Jon.[33][34][35] An infographic subsequently posted on the HBO-controlled website MakingGameofThrones.com confirmed Rhaegar as Jon's father.[36][37][38] Journalists later commented on the significance of two plot points in the season 7 episode "Eastwatch". One of Daenerys Targaryen's dragons, Drogon, approaches Jon calmly and allows the King in the North to pet him, seemingly recognizing him as a Targaryen.[39][40][41] Later, Gilly learns from a book at the Citadel that a High Septon annulled Rhaegar's marriage, and married him to someone else in Dorne, suggesting the possibility that Jon is the legitimate son of Rhaegar and Lyanna.[42][43][44] The season 7 finale episode "The Dragon and the Wolf" confirmed that Jon is indeed the legitimate son of Rhaegar and Lyanna, and that his birth name is actually Aegon Targaryen.[45][46]
question: Who is Jon Snow's father?
answers: Rhaegar