Zompist Bboard Again

Are there any scholarly reconstructions of Meṫaiun? Are Almeans in general aware of its existence, and the relationship between it and Monkhayu? Are there any reconstructions of proto-Monkhayic out there anywhere?

Additionally, which came first (in real world terms) Kebreni or Meṫaiun? Or were they both developed at the same time?

UPDATE: OK, I should have checked the Almeopedia for the answer to the first part, whoops. But what about the out-of-universe part?

The RW history of most Eretald languages is that I had wordlists and geographical names dating back to the '80s or earlier, then reworked them pretty extensively after I learned historical linguistics in the 1990s. Generally I would try to keep words I'd been using for a long time (e.g. "Kebri"). In the case of Meṫaiun, one little thing that helped was noticing how many unexplained toponyms I had that included an initial mV-.

So, as far as I recall, I worked on Meṫaiun and Kebreni at the same time. Since I have a full set of sound changes, the Meṫaiun vocabulary mostly came first.

Monkhayu was intended as an analogue of Khanty or Mansi-- a language of a remote, "uncivilized" people that turns out to be related to a major language. Sadly, there's really very little on it, not least because it depends on many other languages, not all of which are done...