For lack of a better word I call these things pseudo-tartans. I'm pretty sure this is nothing official (although the last unknown tartan I bought turned out to be a Black Stewart).
I don't know. I just know it's gorgeous fabric, with a REALLY nice feel. It's advertized as wool but I can't tell if its 100% or a blend.
Anyway, I think it will look great as a kilt and will look good with my black kilt jacket.
You can find good stuff on the internet if you are patient. I go to several fabric store links and search on "wool plaid". Sometimes I get lucky.
Denver fabrics is a regular search.