Spoiler Alert

House of the Dragon brought viewers back to one of Game of Thrones‘ most notorious locales during the prequel’s fifth episode of season two. Prince Jacaerys took it upon himself to fly his dragon to the Twins, home of House Frey, the Red Wedding, and Arya’s ultimate revenge. House of the Dragon‘s visit to that infamous stronghold wasn’t as deadly, but even without any murder, Jace’s encounter with Lord and Lady Frey still had major connections with Game of Thrones. House Frey was always willing to let a Northern army cross its valuable bridge… for the right price.

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With Meleys and her dragonrider Rhaenys dead, Queen Rhaenyra’s position has never been more tenuous. She desperately needs the Riverlands and its massive armies to join her cause if she has any hope to defeat the Greens and claim the Iron Throne. With her husband Daemon out of pocket—and possibly out for himself at Harrenhal—a frustrated Jacaerys flew off on his dragon Vermax without his mother’s knowledge or permission. He’d grown tired of being confined to Dragonstone while others serve (and die for) his mother’s cause. His proactive, unsanctioned mission took him to the Twins of House Frey. Jace hoped to find both an ally and a path forward in the war.

House Frey is one of the newer noble house in Westeros. At the start of the Dance of the Dragons, its history only dated back four hundred years. That’s nothing compared to the millennia some other families have been around. House Frey rose to prominence thanks to its identical dual castle home the Twins. Also known as the Crossing, those structures are connected by a long stone bridge over the Green Fork River, one of three rivers that make up the Trident.

(In George R.R. Martin’s books, the bridge also has a tower in the middle. From there guards can fire on anyone who crosses without permission. HBO’s shows do not include the tower.)

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The Freys got rich and powerful by charging others to use their well-placed river passage. They never lacked for willing customers, either. The Twins greatly reduces the time needed to move between the North and Riverlands. The Crossing provides speed, safety, and convenience, all things especially valuable to armies on the move who would otherwise be forced to go a long way around a much more treacherous path.

That swift passage is exactly what Jace hoped to secure for his mother on his mission. Cregan Stark has sworn the North to Rhaenyra’s cause. The Lord of Winterfell is sending 2,000 seasoned, older troops to immediately fight on her behalf. If they could cross at the Twins they would be able to join the fight much faster. Without House Frey’s permission the Northmen might be too late to be of any use. The war could be lost before they arrive. Lannister forces sworn to King Aegon are already amassing in the West.

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At first Lord and Lady Frey were wary of providing Cregan’s men passage. They have no issue with Rhaenyra’s claim, but their Lord Paramount has not declared for either side. “The oaf” Lord Grover Tully is too sickly to make any decision. (That led Daemon to tell his grandson to put a pillow over his grandsire’s head so the young man could begin his reign and back Rhaenyra.) Supporting the Queen without their Lord’s permission would be treasonous. Even letting Cregan’s men cross would amount to picking a side.

More importantly, House Frey rightfully fears Aemond and Vhagar. They are the most destructive power in the world. If there were any question about that before, the whole Realm already knows what just happened at Rook’s Rest.

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Jace assuaged their concerns by swearing both his dragon and his Uncle Daemon’s would protect House Frey. While that made the Freys happy, the Prince recognized they wanted more. When pushed they asked for Harrenhal, an even bigger, more valuable castle in the Riverlands. It belonged to Larys Strong before Daemon took it.

Prince Jacaerys was willing to give the grant them the infamous, cursed stronghold at the end of the war, but he needed more for a prize that big. To earn Harrenhal his mother Rhaenyra requires “bent knees.”

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The Freys sworn support is far more valuable than a couple thousand Northmen walking across a bridge, because the wealthy family can amass a well-regarded army that is even bigger than the one their own lords at House Tully can call on. (The Riverlands are really important because it’s centrally located, fertile, and full of soldiers. Houses Blackwood and Bracken, both now sworn to Rhaenyra as well, can also gather more men than the Tullys.)

Lord and Lady Frey accepted the Prince’s offer, and Rhaenyra said her son did their cause a great service. The Blacks now have a fighting chance to win. But while Jace’s meeting at the Twins went very differently from the last time viewers saw a dark-haired member of a noble family there—when Arya poisoned every Frey man while disguised as Lord Walder—Jace’s scene at the Twins was ripe with connections to Game of Thrones.

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Robb Stark’s ill-fated alliance with Lord Walder Frey on Game of Thrones also arose from Robb’s own need to move his Northern army quickly. He was trying to march south against the Lannisters. They had his father Ned imprisoned as a traitor in King’s Landing and were holding Sansa as a de facto hostage. (No one knew where Arya was.) To save his family and advance against the Lannister army, Robb needed safe passage for his men at the Twins.

His mother Catelyn knew the prickly Lord Walder personally and went as an emissary for her son. She returned with an offer for both safe crossing and Frey fealty. The deal included Robb’s oath to marry one of Walder’s daughters after the war.

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Robb accepted and the Northmen crossed at the Twins. But Robb did not keep his promise to the notoriously dangerous, untrustworthy Lord Frey. Robb fell in love with a healer from Essos named Talisa. After the two married, against Catelyn’s advice, House Frey withdrew their support from Robb’s cause. A desperate Robb’s later efforts to bring House Frey back to his army resulted in the Red Wedding.

Lord Walder wanted much more than what Robb was now offering. The new deal would see his uncle, Catelyn’s brother and new Lord of Riverrun Edmure Tully, marry one of Walder’s many daughters instead. This new marriage would unite the two Riverland families by marriage.

That marriage happened, but Lord Walder got his revenge anyway. He conspired with Tywin Lannister and Roose Bolton to pull off the Red Wedding. The Freys killed Robb, Catelyn, Talisa, and all the Northmen Walder had sworn to protect at the Twins.

Lord Walder, who always felt disrespected and looked down upon by older, noble houses, specifically cited his desire to have his family marry a King as his reason for this unimaginable act. House Stark had broken their oath and embarrassed House Frey. Robb denied the Freys the one thing all their money and soldiers could never buy: respect. For that disrespect, Robb and the North paid with their lives, as did Lord Walder. In the end, winter came for House Frey.

Lord Walder’s actions did not represent House Frey, but it did capture some things that were always true about them. The Twins was always extremely valuable during war when Northmen needed to go south. And even two hundred years before the Red Wedding the Freys were just as ambitious when someone came knocking. House Frey wanted more power, more money, and more respect.

For Jace that meant giving them a bigger castle. For Robb it was supposed to mean his hand in marriage. And for everyone else it’s a reminder that an upstart family smart enough to build a highly valuable bridge at an important locale should never be underestimated.

Mikey Walsh is a staff writer at Nerdist who is always looking for a reason to mention Cregan Stark. You can follow him on Twitter and Bluesky at @burgermike. And also anywhere someone is ranking the Targaryen kings.