Intermediate - The Folkung dynasty name
So, here's a topic where I'd really like some of your opinions and/or ideas. What should the Folkung dynasty be called in this timeline?
Now, for context, the name Folkung was coined to describe the dynasty in the 17th century, though the term existed before, then not referring to any specific family. This is the same era when last names became common among Scandinavian nobility in general, before that family names weren't commonly used and people (including me) retroactively applying them is just for simplicity's sake. The name Folkung harkons back to the dynasty's supposed founder Folke the fat.
Now, when standardised "dynasty names" come around in this timeline, and if the Folkungs are still around at that time, should they be called Folkungs? I wouldn't have a problem with it name-wise, I think it's a pretty cool name, but there may be some other potential issues with the name. One would be that it seems like there were relatively few ruling houses in Europe which took their name from a founding figure, the Jagiellonian dynasty being one of the few examples I know of, and I'm unsure if that name was ever "official".
It seems to me like it was much more common to have a place-derived dynasty name, that's the case for most German families at least. A name like that exists for the Folkung dynasty, the house of Bjälbo, referring to a tiny village in Östergötland where the family first held lands. It might just be me, but I kinda hate that name and I'd rather not use it.
So, with that in mind, I'd like some ideas for what the dynasty should be called in this timeline, if we don't stick to the Folkung name.
I have a few possible ideas myself, but I'm not sure if I like any of them.
One would be basing the name of the family coat of arms, which is what lots of Scandinavian nobility did when they had to pick a last name in the 17th century, the Vasa family included. If so, I suppose that would be the golden lion which also half-represents Sweden alongside the three crowns, so the family could be called something like Gyldenløve, which actually was the surname bastards of Danish Kings were given in the 17th century. Or maybe it could be derived from the three crowns representing the union, as the house of Tre Kroner, which has a nice ring to it I think.
Another possibility would be to make a parallell to the house of Estridsen, the old royal house of Denmark, which took it's name from the fact that it rose to royalty through a marriage to a royal princess named Estrid. A case could be made that there's a parallell between that and how the Folkungs rose to power in Denmark by marrying Margaret Valdemarsdatter, so a name like Margrethesen could be a possibility. Now that still is naming the house after it's "founder", but I really like the idea of crediting Margaret by naming the entire dynasty after her. The union exisiting is all on her after all, and would also fit well with this timeline's name.
Naming the dynasty after one of the union's Kingdoms could also be a possibility, if so I think something like the House of Norway could be a possibility, given the fact that only Norway is a hereditary Kingdom and thus the only one that really belongs to the dynasty, I also think it'd be nice symbolic gesture to the weakest and sometimes woefully ignored of the three Kingdoms. Abroad I think a name like the House of Denmark might be used though, as it's the most prominent of the Kingdoms and certainly the one most connected to the rest of Europe, creating something like a England/Great Britain or Holland/Netherlands situation.
Those are a few possibilites I thought of, now I'd love to hear what you think of them as well as your own ideas.