The conversation between human and AI assistant.
If Jon Snow was the son of [...], why did Ned Stark not tell Catelyn Stark about it?
Did Jon Snow ever find out who his real parents were?
Yes, eventually Jon finds out about his true parentage through Bran's visions and Sam's discovery of a document in the Citadel. He learns that he is actually a Targaryen, and his real name is Aegon Targaryen.