Board Thread:Lore Discussion/@comment-24075086-20151004014538/@comment-80.216.210.57-20151004225052

According to the  Third Pocket Guide to the Empire, they are descended from the Nedic  and Aldmeri, while other sources claimed they were the mix of Atmoran  and Aldmeri blood. The  Altmer  thought of making a new race with their own 'elder' or 'superior' blood, by mating with other races. [1] [2]  The Bretons are sometimes called 'Manmeri' because of this.

Well, there's this.

Though, guess it wasn't Aldmer regardless.