After reading Vivec's sermons I got an impression that in the beginning of his career Nerevar was just a mercenary captain and didn't belong to House Indoril.
Then some time ago I saw a post here in which it was told that Nerevar was born into a minor House (now extinct, like House Sotha) before he was accepted to Indoril. The name of this House was also mentioned. Unfortunately, now I can't find this post.
So, was Nerevar born into House Indoril or became Indoril through marriage with Almalexia? And is there a definitive answer to this question or speculations are possible?