Board Thread:Lore Discussion/@comment-1600847-20130821212751/@comment-9212235-20160921144134

I think OP would benifit from reading through this:

https://www.imperial-library.info/content/arden-sul-1

This is an extremely well researched theory by Lady Nerevar, a very well respected and well known lore schollar and lorebeard. She has been around since the days of Morrowind and remains active to this day. The theory is well received and most of the deep lote community accepts this theory. It has also recently been reinforced by a Loremaster's Archive interview with Haskill.