Question: who are rhaegar targaryen and lyanna stark?
Answer: Most in Westeros believed that Rhaegar had kidnapped Lyanna, who was betrothed to Robert Baratheon, and raped her, but they had in fact loved each other. They ran away to Dorne and lived in the Tower of Joy. They are the true parents of Jon Snow (born Aegon Targaryen), who is the true heir to the Iron Throne.