What Happens Next to Hugh Hammer in House of the Dragon Season 4?

Hugh Hammer ends season 3 with Vermithor, a dead wife and the power he once wanted to protect his family. Now the reason he wanted it is gone.

Hugh Hammer standing alone by a river in dark clothing, looking back over his shoulder

HBO

Full spoilers for all three seasons of House of the Dragon. Speculation about season 4 throughout.

This piece is about the show and only the show. Kat and Hugh's daughter do not exist in the published history, and House of the Dragon has built Hugh Hammer a motive of its own, so what happens elsewhere is not being treated as a roadmap for what happens here.

Hugh Hammer (Kieran Bew) never wanted a dragon. He wanted to feed his family.

That is worth holding onto as season three ends with him beside Vermithor and nobody left to feed. His daughter is dead. His wife is dead. The security he thought power might finally buy never arrived.

Season four does not need to turn Hugh into a villain to make him dangerous. It only has to ask what Vermithor is for now.

Why did Hugh Hammer's daughter die?

Hugh Hammer carrying her daughter in a mob
HBO

Before Hugh matters to anybody, House of the Dragon makes him one of the people paying for a war he did not start.

He is a blacksmith in King's Landing with a sick daughter. The crown commissions him to work on the scorpions meant to defend the city, but the money Aegon II Targaryen (Tom Glynn-Carney) promises never arrives in a form that changes his family's situation. At the same time, the Velaryon blockade is strangling King's Landing in Rhaenyra Targaryen's (Emma D'Arcy) name. Food disappears and prices climb.

Hugh petitions the crown, gets nowhere, and eventually becomes desperate enough to steal food in the street. His daughter dies anyway.

Neither Aegon nor Rhaenyra kills her, which would make Hugh's anger much simpler. Both sides help create the conditions in which an ordinary man cannot save his child.

That matters because Hugh does not join this war out of some deep belief in Rhaenyra's claim. He joins it after ordinary life has already failed him.

Why did Vermithor accept Hugh Hammer?

Hugh Hammer standing alone in the dragonmount facing Vermithor, fires burning across the cavern floor around them
HBO

Hugh does not wait passively for Vermithor to choose him. He challenges him.

The Red Sowing is the closest House of the Dragon comes to staging a massacre as a recruitment process. Mysaria (Sonoya Mizuno) helps put the dragonseed idea in Rhaenyra's head, and a crowd of Targaryen bastards is eventually brought before Vermithor. Most do not survive. Hugh does.

Then, when Vermithor turns on a fleeing woman, Hugh puts himself between them. He stands his ground, and Vermithor accepts him.

That distinction matters. Hugh is not accidentally discovered by the right dragon. He sees an opening and steps directly into it. The bravest thing Hugh Hammer ever does is also the most ambitious.

There is also a family symmetry underneath the scene. The show all but identifies Hugh's mother as Princess Saera Targaryen. Hugh describes a silver-haired mother with Targaryen blood who worked in a pleasure house and spoke of her royal relatives in ways that point heavily toward Saera.

If that identification is correct, King Jaehaerys I was Hugh's grandfather, and Vermithor was Jaehaerys's dragon.

That does not mean Hugh inherits Vermithor. Dragons are not estates that move neatly down a family tree. But the image is difficult to miss. A man who has spent his life hidden from his royal ancestry ends up riding the dragon of the king at the top of it.

Hugh had kept that part of himself buried for years. Even Kat does not learn the truth about his mother until he is preparing to leave for Dragonstone.

And when he finally gets Vermithor, he does not immediately start talking about crowns. What Hugh wants is still recognizable: status, security, a life in which powerful people cannot simply ignore whether his family survives.

Rhaenyra does elevate him. She does not simply hand Hugh a dragon and give him nothing in return. He is brought into her war, given status and treated as somebody whose household should now have a future. The tragedy is that those rewards arrive too late to do the job Hugh wanted them to do.

Power finally notices Hugh after power has already taken almost everything from him.

How did Hugh Hammer's wife Kat die?

Hugh Hammer kneeling over Kat's body inside her brother's house, holding her
HBO

The show deliberately leaves the exact answer unclear, and the sequence around her death is crueler than any clean explanation would be.

Kat (Ellora Torchia) had wanted to leave King's Landing for Tumbleton, where her brother lived. Hugh refused.

There is pride underneath that decision. He does not want to arrive at another man's home with nothing and live as a dependent. He still believes he can provide for his own family if the people above him simply keep their promises. They do not.

Then the war reaches Tumbleton, and Hugh goes to get Kat out.

This is the part that matters. He had been posted in King's Landing, guarding the capital against Aegon on Sunfyre and Aemond on Vhagar. He leaves that post anyway, reaches Tumbleton, and finds her before the battle has consumed the town.

She refuses to go with him.

She thought Hugh was dead. She had needed him beside her and he had not been there. The dragon Hugh sees as his route back to his family has also become part of what separated him from it.

Then the battle begins. Hugh gets off Vermithor and searches Tumbleton for Kat on foot. The man with one of the largest dragons alive leaves that power behind and goes house to house looking for his wife.

He cannot reach her in time. When the fighting is over, he finds Kat dead in the ruins, with no clean explanation for exactly what killed her.

Twice somebody tried to get the two of them out of danger, and twice the other one said no. Between them they refused each other into a burning town.

Who does Hugh Hammer blame for Kat's death?

Nobody knows, and that uncertainty is more useful than an answer, because the blame genuinely does not sit anywhere clean.

Ormund Hightower (James Norton) turns Tumbleton into a trap in part because he understands Rhaenyra's reluctance to destroy a town full of civilians. By the battle itself, children are being forced onto the battlements as human shields.

Rhaenyra hesitates because attacking means killing the people she claims to be protecting. When she finally moves, the intention is to remove the Hightower forces while limiting civilian deaths. Then the battle stops obeying anybody's intentions.

Ulf White (Tom Bennett) breaks from Rhaenyra's side and turns Silverwing on Black forces before the destruction spreads through Tumbleton itself. Ormund dies. The town burns. Kat dies somewhere inside the chaos.

So who does Hugh blame? Ulf, whose actions helped turn the battle into catastrophe? The Greens, who occupied the town and used civilians as protection? Rhaenyra, who ultimately ordered the assault? Daemon Targaryen (Matt Smith), who helped carry it out? Or himself, for leaving his post, reaching Kat and still failing to save her?

The show has not told us, and it does not need to yet. What it has established is that Kat was the reason Hugh still had something personal to gain from this war.

Now she is gone. Staying with Rhaenyra would require Hugh to choose Rhaenyra's cause for reasons that belong to Hugh himself, and that is a different decision from the one he made when he first went to Dragonstone.

Why does Vermithor matter so much in season 4?

Because Hugh's grief would be a private tragedy if he were still a blacksmith. He is not. He rides Vermithor, one of the largest and most formidable dragons alive.

That does not make Hugh unbeatable. House of the Dragon has already shown that dragon combat is not simple arithmetic. Size matters, but so do riders, experience, surprise, terrain and circumstance.

The change is political. Before Vermithor, Hugh can ask a king for what he is owed and be ignored. After Vermithor, kings and queens have to care what Hugh thinks. That is an extraordinary reversal for somebody whose story begins with powerful people barely noticing whether his family survives.

Vermithor does not make Hugh invincible. He makes Hugh impossible to dismiss. And season four begins after Hugh has learned exactly what being dismissed can cost him.

What does Tumbleton change for Hugh Hammer?

It removes the easiest explanation for why Hugh wanted power.

Until now, almost every ambition Hugh could admit to himself could be framed as providing for somebody else. He needed money for his daughter. He wanted security for Kat. He claimed Vermithor and entered Rhaenyra's war because becoming important finally looked like a way to protect the people ordinary Hugh Hammer could not protect.

Then his daughter died. Now Kat is dead too.

That does not automatically make Hugh disloyal, turn him into a villain, or mean he suddenly wants a crown. But it does remove the old answer to a very simple question. Why does Hugh need all this power?

Rhaenyra still has an answer. She needs Vermithor. What Hugh needs from Rhaenyra is much less obvious.

And there is another possibility underneath that uncertainty which season four may finally have to confront. What if Hugh still wants power even when there is nobody left for him to say he wants it for?

That does not make him corrupt. It makes him human. The Red Sowing already showed that courage and ambition can exist inside Hugh at the same time, and Kat's death may force him to acknowledge the second half.

Will Hugh Hammer betray Rhaenyra in season 4?

Betrayal may be the wrong word for what the show has actually set up.

It is worth noticing what House of the Dragon chooses not to do at Tumbleton. Ulf openly breaks from Rhaenyra's side. Hugh does not. Instead, Hugh abandons an assigned post for a personal reason. He goes looking for Kat.

From Hugh's perspective, that is a husband trying to save his wife. From Rhaenyra's perspective, it is one of her most important dragonriders deciding that his own priority mattered more than the defense of her capital, at a moment when the two largest dragons on the other side were still in the sky.

That difference could become important very quickly. Earlier versions of Rhaenyra might have cared enormously about why somebody disobeyed. The Rhaenyra who ends season three has become considerably less patient with people who refuse to do what she believes necessity requires.

So both characters now have legitimate questions about the other.

Hugh can ask what Rhaenyra's cause has actually given him. That does not mean the answer is nothing. She gave him status, trusted him with enormous responsibility, and intended the new life of a dragonrider to improve his circumstances. But none of those rewards can give him his daughter or Kat back.

Rhaenyra, meanwhile, can ask whether a man who has already left the capital undefended for personal reasons can still be trusted with Vermithor.

Neither question requires a villain. They only require different answers.

And that is why Hugh Hammer may be one of the most important characters heading into season four. He began this story asking powerful people for enough money to keep his family alive. Then he claimed a dragon because power looked like the answer to being powerless.

Now the daughter he wanted to feed is dead. The wife he wanted to protect is dead. And the dragon remains.

The question for season four is not whether Hugh Hammer betrays Rhaenyra. It is what Hugh wants Vermithor for now that there is nobody left at home for Vermithor to protect.

How does Hugh Hammer die in the books?

In Fire & Blood, Hugh does not stay loyal to anybody. Once Aemond and Vhagar are gone he declares himself king, on the grounds that he rides the oldest and largest dragon alive, and puts a crown of black iron on his own head. It does not last. A group of Green nobles decides he is a liability, and Ser Jon Roxton kills him before he can reach Vermithor.

The show has already moved away from that. On the page, Hugh betrays Rhaenyra at Tumbleton alongside Ulf, and the two of them are remembered as the Two Betrayers. On screen, only Ulf turns. The book's Hugh is also unpleasant from the moment he appears, where the show's Hugh is a decent man who has been failed repeatedly and keeps behaving well anyway.

Which opens a different ending, and a bleaker one.

The show's Hugh may not want a crown at all. He may simply be finished. Finished with the war, with the people running it, and with being asked to burn towns for a queen who never sent the money he was promised. A dragonrider who no longer wants to fight is not a traitor, but he is a problem, and Rhaenyra is running out of patience for problems.

So the killing could still happen and mean something entirely different. Not Green nobles removing a rival, but Rhaenyra removing a rider she can no longer command, with a Green knight left holding the blame.

Cast

  • Kieran Bew as Hugh Hammer
  • Ellora Torchia as Kat
  • Emma D'Arcy as Rhaenyra Targaryen
  • Tom Glynn-Carney as Aegon II Targaryen
  • Sonoya Mizuno as Mysaria
  • Tom Bennett as Ulf White
  • James Norton as Ormund Hightower
  • Matt Smith as Daemon Targaryen

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