Board Thread:Lore Discussion/@comment-15146536-20130811054430/@comment-13446185-20130811072557

Ysmir is a title, 3 people are known to have it. Ysmir Wulfharth, Tiber Septim, and the Dovahkiin. It is bestowed by the Greybeards and means Dragon of the North, it is basically another way of saying Dragonborn.