How Common Is Incest in the Targaryen Family on Game of Thrones?

Warning: This post contains spoilers for Game of Thrones.

Jon revealed his true parentage to Daenerys on episode 2 of season 8 of Game of Thrones: He is the son of Dany's brother, Rhaegar Targaryen, which means that Daenerys is his aunt. Daenerys seemed more angry that Jon might be the true heir to the Iron Throne than worried about the fact that she had slept with her own nephew. But incest is nothing new to a Targaryen.

Warning: This post contains spoilers for Game of Thrones. Jon revealed his true parentage to Daenerys on episode 2 of season 8 of Game of Thrones: He is the son of Dany's brother, Rhaegar Targaryen, which means that Daenerys is his aunt. Daenerys seemed more angry that Jon might be the true heir to the Iron Throne than worried about the fact that she had slept with her own nephew. But incest is nothing new to a Targaryen.