[@Firetigress3] I think having the differing races of Elves would be the way to go; the High Elves I've written about are directly descended/survivors of Elvendom (a name I decided to give whatever great nation the Elves had many centuries ago), and could be said to be "pure breed". That is to say, they differ slightly from their other kin, in that they are immortal - or live much longer than lesser breeds. That would make things more in line with my thinking, but I'd have to consult Titan for his opinion. 

So getting onto Kyssoun's tribe and his origins, let's look at what you've put:

"Khyssoun was born in the forest to two mid-ranking elves of the Syranthr Tribe in the local forests. It wasn't a large tribe, but they managed well on their own without relying too much on the help of outsiders. They were skilled at farming and traded with the humans for clothes and other supplies they needed, depending on the season. He helped in the field, and when he wasn't, he attended a rag-tag "school" led by a well-traveled elf. Otherwise, he would train with some of the village elders in the healing arts."

I took this to mean that his tribe was small, and could have existed in any of the woodland areas across the Kingdom (or even off the map, for all that is mentioned). I guessed from this that you meant he was possibly a Wood Elf, or just an ordinary Elf. It could be argued therefore, that his peoples are descended from other survivors from The Great Fall, and have simply chosen to stay clear of Silverspire... or perhaps they had nothing to do with Elvendom, and are an entirely different sub-species altogether that have lived on their land for generations.

Silverspire is an actual Kingdom, a coherent political body with a history of isolation. I decided to make them High Elves because it left room for your Elf, should he ever seek to rediscover his heritage, to elaborate more/invent his own sub race. I thought it might make for an interesting interaction, if the High Elves were to bump into them or if they tried to "bring them back into the fold". I think Khyssoun would hate them personally, for he seems fully indulged in mortal pleasures. 

Anywho, with all that said, if Khyssoun's tribe have indeed originated from Silverspire, then that's fine, and we can ignore the whole High Elf suggestion. You were there first, and I'm certainly not going to go stomping on anyone's feet. 

Hey, if this idea doesn't go through, there's plenty of other ideas I can pursue - but I do have my heart set on creating a second character, so that I have something to do when Kalar is waiting his turn.