Prince Jace and the Wolf Girl

[Canon Claude]

Rereading FAB, this little addition to the Dance of the Dragons chapter is very curious. It seems random to include it at all, since it seems so ridiculous of a story. Prince Jacaerys is an envoy trying to find allies for his mother’s cause as war looms. Why would he (a) waste time on a random dalliance-turned-elopement and (b) why would he risk infuriating Cregan Stark with the aforementioned dalliance? 
Given that this series is about the song of ice and fire, though, and given how strange it is, even by Gyldayn’s own writing, I can’t help but suspect that this bond will play a role in the main series somehow. 

[Aebram]

A little foreshadowing for Rhaegar and Lyanna?  Maybe Ice and Fire -- Stark and Targeryen -- have an instinctive attraction to each other, strong enough to make them break their vows.  FAB tells of a couple of otner cases where Targ women charmed, more or less, Stark men.

[EggBlue]

a little fan service? 

I mean , for all we know , this was as real as the relationship between Aly and Sabita Frey . but it's bolded because " ooh look ! another Rhaegar and Lyanna with a romance that makes no sense!" 

[Alexis-something-Rose]

It's definitely a nod to Rhaegar and Lyanna. Even the name Rickon, Sara's father, is close to Rickard.

The funniest thing about the whole story was how pissed Cregan was about Jace and Sara sleeping together then went "it's all good, you little rascals" because they married in the godswood. I wonder if Cregan slapped Jace on his back when he welcomed him to the family. 

The thing is, Jace needed the marriage to Baela, given all the rumors about his bastardy. His marriage to Baela would have consolidated his power and hold on the throne. 

I think the whole idea is that the Pact of Ice and Fire went unfulfilled for like 150 years. Cregan never got that Targaryen bride for his son. And even later, when the Targaryens were marrying their daughters off outside the family, House Stark doesn't seem to have been considered. And when Aegon V and his wife were making alliances, Shaena and Rhaelle don't seem to have been considered as possible brides for House Stark. Even marrying a Stark lady to a Targaryen prince doesn't seem like it was something that was on the table. 

[James Steller]

I don't think it'll amount to anything, personally. If Jace really had married Cregan's bastard half-sister, that would have come out, and it would have been cataclysmic news. Why would we only hear about it from Mushroom and literally nobody else?

[frenin]

The tale is definitely a nos to Rhaegar and Lyanna. The tale is also definitely false, till he died Jacaerys was promised to his cousin.

23 hours ago, Canon Claude said:

Rereading FAB, this little addition to the Dance of the Dragons chapter is very curious. It seems random to include it at all, since it seems so ridiculous of a story. Prince Jacaerys is an envoy trying to find allies for his mother’s cause as war looms. Why would he (a) waste time on a random dalliance-turned-elopement and (b) why would he risk infuriating Cregan Stark with the aforementioned dalliance? 
Given that this series is about the song of ice and fire, though, and given how strange it is, even by Gyldayn’s own writing, I can’t help but suspect that this bond will play a role in the main series somehow. 

The answer to your questions is that the story is bullshit. 

[Darth Sidious]

It’s meant to arouse curiosity but likely it is irrelevant to the story going forward. Fire and Ice do not mix. If they ever did or do, the result is tragedy. 

[Lord Varys]

Well, if there was something to do that we might learn a tidbit more about it if Sara Snow ever showed up again in the next FaB book. After all, we should see a lot from him and his family in the future, so his bastard sister might feature again during a visit at Winterfell or accompany Lord Cregan to court. After all, we also get some kind of clarification/elaboration on the death of Queen Ceryse and the end of her alleged murderer in the Jaehaerys chapters. George could choose to revisit this if the Starks are revisited in depth in FaB II. And they are to play a role in that book, considering Rickon Stark ends up joining Daeron I for ins conquest of Dorne.

And if she were to have a child ... then, well, there might be something to this. Considering the delicacy of this thing nobody would publicly talk about or confirm it - especially if only the part about the sex was true and not, in fact, the part about the wedding. But even if they were married - with neither Jace nor Rhaenyra ever acknowledging it in the south it would be basically non-existent.

George could turn such a child into another version of Jon Snow, showing us what could have been if Ned had actually taken Jon Snow to court with him. Say, Rickon and his cousin by Sara grow up together at Winterfell, are fostered at court with Aegon III's own children, befriend the young princes, and play a considerable role in the lives of the Targaryens. Rickon will die in Dorne, but his hypothetical cousin could end up joining the Kingsguard at the side of the Dragonknight, he could sit on the Small Council with Viserys II and Alyn Velaryon, or do other noteworthy things.

If there was a silent understanding between Aegon III and Cregan Stark that they shared a nephew there then it wouldn't be surprising if he got all that advancement.

All we need for such an episode to make sense is that official history - Gyldayn's writing included - agrees that this boy had a different parentage. A fake background could easily be established if Sara Snow was married to another man shortly after Jace left (or shortly after his death). If Cregan announced that his sister had been betrothed to that guy for quite some time, even her pregnancy wouldn't have been tied back to Jace's visit).

I'm by no means sure that George is going to take the story in that direction, but it is certainly not impossible.

Especially since FaB II should include another 'Jon Snow variation' with Alys Rivers' son. He will be 'the rightful king' of the male line Grand Maester Munkun was looking for when the succession was discussed, and chances are pretty good that his mother and he will make a bid for the throne during the reign of Aegon III.