House Devar - Is There an Unmade Influence?

i am most intrigued by something you mention very briefly, which is an unmade influence. Yet, brandon has mentioned that part of the darkness that is described in house devar is due to un made influence. And we don't see them interact with the outside world quite as much but it doesn't seem like the other noble houses around them are experiencing the same types of things that are happening. But there are a couple more theories out there, because the who is china question has exist for a while before people settled on chelon's mam. Like, don't just marry her to some lame noble but that brings up the question, as this supposed to be a relatively small noble