Daeron II Targaryen, known as Daeron the Good, was the twelfth Targaryen to sit the Iron Throne. Daeron brought Dorne peacefully into the realm, uniting all the lands of Westeros south of the wall. His bastard half-brother, Daemon Blackfyre, challenged his rule and the result was a terrible civil war, the First Blackfyre Rebellion. Daeron died during the Great Spring Sickness in 209 AC.
Face Claim: Ed Speleers
Film/TV Show: Eragon, Downton Abbey, Outlander