The Armies of Men will face off against the forces of the Night King in Game of Thrones season 8, but is it really that simple? Is House Stark - including Jon Snow, Sansa, Arya and Bran - actually a White Walker bloodline? A new theory has some compelling evidence and major implications for season 8.

Based on George R.R. Martin's book series “A Song of Ice and Fire,” Game of Thrones is an epic story that explores how sins of the past create events of the future. In the pilot, Ned Stark refuses to believe that White Walkers exist, but the season 7 finale brings the narrative full circle as the Great War begins. Jon Snow is also revealed to be the son of Lyanna Stark and Rhaegar Targaryen, thus complicating his love affair with Daenerys Targaryen, all the while emphasizing Game of Thrones' primary theme: a song of ice and fire.

Related: Game of Thrones' Original Pilot Would Have Killed the Show Before It Began

But the Stark connections to the War To Come may run deeper than that. A Game of Thrones theory, recently highlighted by Maester YouTuber Alt Shift X, suggests that House Stark's lineage contains White Walker blood. And, while it may at first seem one of the more out-there theories about Game of Thrones season 8, it actually makes a surprising amount of sense.

The Starks Have A Secret History With The White Walkers

White Walker and Ned Stark in Game of Thrones

The formation of House Stark dates back to “The Long Night”. This legendary tale details “The War of the Dawn,” in which the Children of the Forest and the First Men defeat the White Walkers. Soon thereafter, Brandon the Builder created The Wall and builts Winterfell, the foundation of House Stark, both of which are suspected to be built as defences against any further White Walker attacks. In the HBO series, House Stark fully embraces their legacy, vowing "there must always be a Stark in Winterfell" and warning "Winter is Coming", although there’s a crucial bit of information that was apparently removed from their recorded history.

Not long after the construction of the Wall, a descendant of Brandon known as the Night's King (only in the books and totally distinct from the show's Night King) overtook power from the 13th Lord Commander of the Night’s Watch. According to legend, his wife had “skin as white as the moon and eyes like blue stars” and, during their 13-year reign, they allegedly made plentiful sacrifices to the White Walkers at Nightfort. This was stopped by the reigning Starks and any connection to the family written out of history.

The Starks May Have White Walker Blood

Kit Harington as Jon Snow, Sophie Turner as Sansa Stark and Maisie Williams as Arya in Game of Thrones

The House Stark-White Walker bloodline theory suggests that Brandon the Breaker, unable to kill the offspring of the Night’s King and his Corpse Queen after they were deposed, instead raised the half-human child as his own. This means that the foundation of House Stark is directly connected to a union between a Stark and a White Walker, at least based on the description of the Corpse Queen. If so, that means all descendent Starks could have White Walker blood.

The idea of a great family raising someone else's child as their own recurs throughout Game of Thrones, most notably with Jon Snow, who was raised as Ned's bastard, but also with Craster, who offers his male children to the White Walkers and later has a son with his wife/daughter Gilly who is set to be known as Samwell Tarly's instead.

More: Game of Thrones Theory: Sam is Revealed as Azor Ahai in Season 8

In the light of this theory, a lot of how House Stark is presented in Game of Thrones takes on a new light. Their ability to tolerate the cold is indeed genetic, "Ice" is more than just a weather-inferred name for the family sword, and "Winter is Coming" can be read as a threat as much as a warning. There's a particularly interesting aspect involving the Winterfell crypt, which holds the bones of generations of dead Starks. Each grave boasts a steel sword, a metal that White Walkers are weak to - it could be that this is less a mausoleum and more a prison. The Game of Thrones season 8 teaser put a lot of focus on the crypt, suggesting its contents will be important in season 8 somehow.

Page 2 of 2: What This Could Mean For Game of Thrones Season 8

Game of Thrones Battle of Winterfell

What This Could Mean For Game of Thrones' Ending

If the Starks have White Walker blood, this detail creates a strange sense of dark beauty. In the beginning, Game of Thrones underlines the Stark traditions and Ned’s belief that White Walkers don’t exist. The irony, of course, is that House Stark’s bloodline is connected to the ultimate threat. 

Game of Thrones is a song of ice and fire, a balance that is found in all corners: Jon represents House Targaryen (Fire) and House Stark (Ice); in the season 7 finale, the Night King (no relation to the Starks as far as we know) destroys the Stark-built ice Wall, and with the help of Daenerys Targaryen’s resurrected dragon, Viserion. Having the wintery Starks be linked to the more abject "ice" of the White Walkers would amp up the imagery and open up several big possible outcomes.

Humanizing the White Walkers via a Stark connection could be the key to peace. While Game of Thrones season 8 is sure to see some epic battles, it's worth remembering that the previous great war is believed to have ended with peace between man and Other (something that may have even led to the Night's King in the first place); the same could happen again through a mixture of species bloodlines. This would also tie into the more romantic theories that Jon and Dany will rule together as King and Queen.

However, that assumes Jon taking on the primary role of Targaryen, which goes against much of what the show has said thus far. In Game of Thrones season 6, Jon Snow tells Theon Greyjoy that he doesn’t have to choose a family because he’s both a Stark and a Greyjoy. The same concept applies to Jon: he’ll always be a Stark and a Targaryen, and in season 8 will have to honor both sides. This could see him using his family's long-bred heritage to combat the Night King or even take control of the White Walker army.

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It's worth remembering that much of this Game of Thrones theory's evidence comes not from the show but the books. The Night's King - the Stark who sacrificed his offspring - has yet to be referenced and, considering the Night King is the show's primary antagonist, is unlikely to be introduced lest regular audiences get confused. Series showrunners David Benioff and D.B. Weiss understand the wide appeal of their cultural behemoth and are more likely to tease certain ideas via subplots rather than have them essential to Game of Thrones' conclusion. The same, however, may not be the case with George R.R. Martin's long-delayed books.

Next: Game of Thrones Theory: The Starks (Accidentally) Created The White Walker Threat