Also known as Aegon the Conqueror, Aegon I was the first Targaryen king and the first to unite the kingdoms of Westeros under a single ruler. Aegon invaded Westeros and won his war of conquest, with the surviving great Houses bending the knee to his rule. His reign marked the beginning of centuries of Targaryen rule, although not everyone was pleased with the new government, and the reigns of his successors had to deal with the aftermath.
Aegon I died of a stroke at age 64, and was succeeded by his son, Aenys I.