Jace did not react to Ulf and Hugh Hammer well and I can understand why. Also I know what they do in the books so while it looks like the tv show is making them more nuanced and palatable to the audience Jace is still my #1.
That being said I have an idea. Jace is a big brother, in my mind that is a very big part of who he is, and now one of his brothers is dead and the rest have been or will be sent away. He is effectively alone being kept away from the war with only Baela for company, but even Baela can’t be there very often as she has to patrol.
This brings me to my idea. Ulf and Hugh need someone to teach them how to be dragon riders and with no one else available it falls to Jace. Jace is not very happy about this but he is dutiful so he will do it. However, Jace is not the most patient teacher and often snaps at Hugh and Ulf when they don’t pick things up very quickly. Eventually Ulf and Hugh get sick of this and impatient to actually mount their dragons (Jace has mostly been teaching them Valyrian, how to direct their dragon, and the history of House Targaryen). Somehow they are able to mount Silverwing and Vermithor but things start to go wrong. Hugh can’t control Vermithor and Ulf is hanging onto Silverwing by a thread and bloodying his hands in the process.
Jace comes to their rescue and is able to corral Silverwing and Vermithor to land. He goes off on Hugh and Ulf berating them for being so stupid and lecturing them on how they could have been killed or killed someone else and how dragons are not pets or tools. He ends the lecture by telling them to show him their hands. Jace is not pleased to see Ulf’s bloody palms and while Hugh’s hands are better off (he has more callouses than Ulf) they are still scratched up. Jace goes to his saddle bags, pulls out some ointment and bandages and treats their wounds.
This shifts something in their dynamic as Ulf and Hugh are surprised that Jace is taking the time and effort to take care of their wounds. Jace is mostly just annoyed at the two men’s foolishness but doesn’t see anything odd about looking after them as they are his responsibility. Before he is done Jace states that he will not tell anyone what they tried to do and he’ll make the necessary excuses to the Queen but he expects them both to never do something so foolish again and for them to actually pay attention to their lessons now.
Ulf and Hugh do go to lessons now and are a bit bolder with Jace now. This means that they are both more likely to ask questions now than they were before. Ulf because he now believes Jace will help him and Hugh because he is no longer afraid Jace will report him to his Queen mother for every grievance. Jace answers all their questions even if some of his answers are curt.
I imagine their relationship shifts even more when one of them asks Jace why they need to learn this. If it’s Ulf he is asking out of genuine curiosity and if it is Hugh it is because he is annoyed and slightly confrontational. Jace gives them two answers the first is that the Queen has accepted them as dragon riders and this has accepted them into House Targaryen, they will have an education worthy of House Targaryen (Rhaenyra did not mean to do this but I think Jace would have a little better perspective on this matter, he would know that after the war they can’t just send them back to what they were before). The second reason is that they will be going to war and as Crown Prince he will see them prepared, he will not allow another dragon rider to perish to Vhagar’s jaws.
This makes both Hugh and Ulf look at Jace differently. Suddenly they don’t see an arrogant and perpetually annoyed princeling, instead they see a young man who has lost his brother and is desperately fighting to keep what remains of his family alive. For a moment they see how afraid Jace actually is but they also see how determined he is, at that moment they swear their is fire in the prince’s eyes.
Ulf is much more willing to listen and follow Jace after that and sings his praises to anyone who will listen. This causes Jace to soften a bit towards Ulf. However, Hugh is still wary of Jace. The big revelation their relationship is when, for some reason, Ulf, Hugh, and Jace get drunk together. Ulf is passed out so it is just Hugh and Jace still drinking. Hugh has some liquid courage in him so he asks if the reason Jace doesn’t like them is because of their silver hair.
Jace is a bit taken aback but the drink has actually mellowed his temper and looking at Hugh’s face he can’t seem to muster up any anger. Instead, Jace tells Hugh that he grew up with Aegon and Aemond and that when they were young he used to follow after Aegon everywhere, that he idolized his uncle. Of course later after Driftmark any goodwill vanished but they were still family. Now, his brother and Princess Rhaenys are dead because of Aemond and Jace has no doubt that the rest of his family will follow if the Greens have their way. Jace goes on to say that he doesn’t hate them but that they have dragons and the Targaryen looks, if the uncles he grew up with could betray them that badly what is to say that two strangers won’t do the same. In a way Hugh and Ulf are even more dangerous because they have no reason to be loyal and their dragons could kill them all much easier than Vhagar who is all the way in King’s Landing and who everyone is watching out for.
Hugh is a bit taken aback. He asks Jace if he believes they will betray him because they aren’t true born. Jace actually snorts and says that he isn’t that much of a hypocrite. He goes on to say that he doesn’t know them and that regardless of his own personal feelings he has to protect his family (the unspoken bit is that he has to protect them if no one else will, Daemon is not here and Rhaenyra is not making the best decisions in who to trust at this point in time).
There is a shift between Hugh and Jace, a new found understanding. If nothing else Hugh respects Jace more now than he did before. Jace continues to train them and as the time when they set out to war get closer he becomes more exacting. Ulf and Hugh don’t complain as they know now that Jace is trying to give them the best chance of coming back alive. Right before they fly out Jace presents them with expensive riding gear in shades of black and weaved through with chain mail, expensive leather gloves to protect their hands, new boots, dragon glass dagger, and small pins made of Valyrian steel in the shape of a three headed dragon with rubies for eyes.
Ulf and Hugh are touched and Ulf hugs Jace while Hugh gives him a respectful nod. Jace gives him an awkward nod back and tells them to watch out for arrows and to remember that dragons are not pets or tools. They part there and Ulf and Hugh go to war where they are actually two of Jace’s most outspoken supporters. A lot of people are doubtful about Rhaenyra’s reign and Ulf and Hugh try to reassure everyone by saying that Jace will be a great king.
I like to think that Ulf and Hugh do well and eventually the question is brought to Rhaenyra about what will be done about them. Addam is going to be Corlys’ heir but what about Ulf and Hugh? Rhaenyra is very vague and just says that they will be rewarded. Jace however speaks up and says that there will be empty keeps and lordships available after this, and that as dragon riders of House Targaryen they should be rewarded with a keep.
This sparks a fight between Jace and Rhaenyra as she thinks that giving Ulf and Hugh lordships wills upset their allies and that it is enough that Ulf and Hugh will be given gold and possibly stewardship of a keep. Jace points out that they can’t just expect Ulf and Hugh to be content with a few gold dragons and being hidden away in a keep after the war is done. By her actions Rhaenyra has ensured that Hugh and Ulf will always be linked to House Targaryen, and giving them keeps and a title mitigates them as a political threat as it keeps them content and acknowledges their service to the crown. Jace and Rhaenyra go back and forth a bit with the argument ending in a stalemate and neither person happy.
Somehow the argument reaches Ulf and Hugh on the frontline and while neither are happy with Rhaenyra but everything they hear about how Jace defended them just cements their loyalty and good opinion of him (the tale has been a little distorted by the time it reaches Ulf and Hugh. Now it sounds as if Rhaenyra wanted them to be sent back to where they came from with a few gold coins while Jace pushed for them to be elevated to Lord Paramounts). It also helps that everything Jace has taught them, all his advice, and even his gifts has saved both Ulf and Hugh’s life more than a few times from an arrow or an ambush while they have been at war.
I imagine that the story progresses with Ulf and Hugh becoming more and more loyal and devoted to Jace while Jace has to constantly defend Ulf and Hugh from other people (at some point Jace has assumed responsibility for the two men, they aren’t his brothers or even family but they are part of House Targaryen and as Crown Prince he has a duty to see them taken care of). At the same time Ulf and Hugh grow more disillusioned and discontent with Rhaenyra with only their loyalty to Jace tying them to the Queen’s cause.
Of course eventually Jace dies at the Battle of the Gullet and everything falls apart. Rhaenyra’s response to her heirs death is to hole up in Dragonstone which endears her to no one but least of all to Ulf and Hugh. The two men want blood and they blame the Triarchy and Rhaenyra for Jace’s death. In their minds Rhaenyra should have ordered someone else to go, gone herself, or provided more dragons and ships. It boggles their minds that Jace and Vermax were brought down by a few arrows and so they have constructed a narrative where it is not only the Triarchy’s fault but also Rhaenyra’s and the Blacks.
Some men, like Cregan Stark, still follow Rhaenyra to honor Jace. However Ulf and Hugh resent Rhaenyra and eventually betray the Blacks. In the end they twist everything Jace said and did for them and interpret it as them having just as much right to the throne as Rhaenyra. Jace did say that they were dragon riders of House Targaryen and Jace taught them everything they know about dragons and House Targaryen, surely one of them would be a worthier heir than Rhaenyra or one of the Greens. Inevitably they die.
I don’t really know where I was or am going with this. I just really like the idea of a Jace who comes into his own by teaching and looking after someone else after all his brothers are either dead or sent away. I like the idea of Jace being a good King and leader and that many people followed Rhaenyra because of Jace. That begs the question though of what happens when one of the big reasons people supported you is gone?