Mathieu Rozenkatz (aka this guy), 26yo bard & council member, could very definitely know him! Mathieu is a very purposefully friendly guy, so maybe some possible camaraderie there~
Theo Finch (escutcheon) is in the EKP, perhaps knows him through his brother? Idk how well they might get along of course, as Theo is a perpetually grumpy berserker, but I am open to anything at all tbh.
Not sure about the others yet, but anything you can think of tbh! :3