User blog comment:Jimeee/Dragonborn officially released on Xbox Live/@comment-5179958-20121213195226/@comment-3492791-20121214042335

Ysgramor was not a Nord either, he was an Atmotan (or you can call them Nede, same thing).

The Atmorans are the ancestors of the Nords, Imperials, and Bretons. The only human race not decended from the Atmotans are the Redguards.