Well, I love every "new quest" ideas. But some well thought should be in place, for details. You see, Skyrim lore is not well fitting for chivalry, and doesn't have barons, proper mages, knights and actually "feminine" women (bad English). It is nordic-based and women here are mighty as bears (and vanilla ones are ugly as ones). So there is not much NPCs for chivalry rescue, I mean Elisif is the only one fitting... and not much holds and jarls for kidnapping/rescues to be bored too fast... So to actually make such thing before Beyond Skyrim's High Rock knights and stuff. I can suggest to use Oblivions, mostly cutted, Knights of the Thorn (wiki: https://elderscrolls.fandom.com/wiki/Knights_of_the_Thorn). In Oblivion it is a small group of beginners located in Cheydinhal. In Oblivion events it was considered a club of "Frawil's drinking partners". But they showed some value during Oblivion Gates in Cheydinhal. So we can easily assume, that now it is somewhat a guild of knights. Full implementation of the guild in Cyrodiil better be left for Beyond Skyrim team, but some "member involvement" in Skyrim can be present. And after Beyond Cyrodiil release such mode can be expanded dramatically... mostly because they are expanding towns and there are barons, lords, fantasy princesses-like maidens... My two septims for story: One member of Knights of the Thorn, a complete novice or knight apprentice, in need to make him a name. He is a clumsy, coward and stuff. So he have heared that jarl of Solitude, beautiful young maiden have lost her husband. So he thought it is his chance... Dovakiin helps him to get recognition in Skyrim (without knowing his true goal). He is from Cyrodiil, so he doesn't know there is that Solitude, who is that jarl, Dovakiin eventually helps him with all that... it can be well-played for fun like "I need to save a beautiful maiden from Ro... Rurstead...Rumestead... can you, good traveler, accompany me?" and it turns out to be and old, grumpy farm worker (man) with drinking problem, or a hugraven in the Reach. Meanwhile this "knoght" could tell Dovakiin how popular and rich he is back in Cyrodiil (lie and stuff), for future Beyond Skyrim integration... Hope my rumbling will help someone to come up with idea.