Aenys I Targaryen, King of the Seven Kingdoms

From Asoiaf

Aenys I of House Targaryen, King of the Seven Kingdoms (reigned 37 AL - 42 AL), was the son of Aegon I Targaryen, King of the Seven Kingdoms and Rhaenys Targaryen.

Aenys I succeeded his father on the throne.

He had a son Jaehaerys I.

On his death Aenys I was succeeded by his half brother Maegor I.