To make a change from the Oblivion-gate-a-thon of the Aid for Bruma quest, I decided to get aid from Kvatch, where there isn’t a gate any more (I closed it right near the beginning of the game, remember?).
Instead, I had to retake the castle there, and find the count. I had the help of a load of soldiers and stuff, but they were all crap and died fairly quickly. There were some huge new baddies inside the castle too, but they weren’t that difficult to kill.
Anyway. I found the count, who was dead, and gained some Aid for Bruma as expected. Back to Gate closing next, I think.