Aenys I Targaryen was Lord of the Seven Kingdoms and the second Targaryen king to sit the Iron Throne. He was the son of King Aegon I Targaryen and his younger sister-wife, Queen Rhaenys Targaryen. He had a younger half-brother, Maegor I Targaryen. Aenys I Targaryen was Lord of the Seven Kingdoms and the second Targaryen king to sit the Iron Throne. He was the son of King Aegon I Targaryen and his younger sister-wife, Queen Rhaenys Targaryen. He had a younger half-brother, Maegor I Targaryen.