It turns out Jon Snow's Game of Thrones season 8 plot might not be set in stone in George R.R. Martin's books, thanks to a major revelation in new play The Mad King.
Spoilers follow for Game of Thrones: The Mad King, so turn back now if you don't want to spoil the play!
GamesRadar+ attended a performance of the new play in the UK's Stratford-Upon-Avon, and we learned some very interesting news about Jon Snow that contradicts his TV show plot.
In the TV show, Jon is eventually revealed to be Aegon Targaryen, son of Rhaegar Targaryen and Lyanna Stark. The lovebirds actually got married, as witnessed by Bran Stark, and so Jon/Aegon is officially the true heir to the Iron Throne, displacing Daenerys in the Targaryen line of succession.
However, the play tells a very different story. While Jon is still the son of Rhaegar and Lyanna, crucially, the lovers are never actually seen to be formally married. There is some ambiguity here, however, because Elia Martell – Rhaegar's actual wife – makes reference to always being fine with the idea of Rhaegar taking a second wife: one for duty, and one for love. And, a time skip glosses over Rhaegar and Lyanna running away together, with Act 2 picking up with the couple already hidden away in the Tower of Joy. So, it's possible Rhaegar and Lyanna are considered wedded, but, either way, no wedding ceremony actually takes place onstage (personally, I didn't get the impression that they had married).
This means Jon is most likely still a bastard, with no official claim to the Iron Throne at all (though, as Rhaegar's son, he could still make some kind of claim for the crown). Even more importantly, though, is the fact that Lyanna does not actually name her son before dying in childbirth. In the TV show, she told her brother Ned Stark that her son's name was Aegon. In the play, Ned chooses to name the baby Jon after Jon Arryn of the Vale, who fostered Ned and Robert Baratheon as children.
All of this lends credence to the theory that the TV show blended elements of Jon Snow's storyline with Young Griff, AKA Aegon Targaryen – who claims to be the second-born son of Rhaegar (with his wife Elia), thought murdered by the Mountain during the sack of King's Landing but actually swapped with another child and saved. While there's plenty of evidence in Martin's books to suggest Young Griff is a fraud, it still hasn't been confirmed either way. If Young Griff is who he says he is, then he is the true heir to the Iron Throne – and he's named Aegon.
Young Griff was cut from the TV show, so it wouldn't be a huge surprise if Jon Snow did end up absorbing some of his plot. What exactly that means for Jon remains to be seen, since, in the TV show, his heritage didn't end up being that big of a deal.
But, this all comes with the caveat that Martin has said before that only the books are canon. Martin was involved with The Mad King, however, so we can probably take the play as a semi-canon source with as much legitimacy as the TV show. Ultimately, we won't know for sure until (or if) Martin finishes the books. Here's hoping The Winds of Winter comes soon...
Game of Thrones: The Mad King is playing at the Royal Shakespeare Theatre from now until September 5, 2026. For more on the play, check out our guide to 16 things we learned about Game of Thrones from The Mad King.
You can keep up to date with the world of Westeros with our guide to all the upcoming Game of Thrones movies and TV shows.
