is the mad king raegar?
<answer> No, Rhaegar was one of the Mad King's three children. <context> Rhaegar Was the Mad King’s Heir: At present Daenerys is the only known living member of the Targaryen family on “Game of Thrones,” but there was once a time when their lineage was strong in Essos. Rhaegar was one of the Mad King, Aerys Targaryen’s, three children from his marriage to his sister, Rhaella Targaryen. Rhaegar had both a brother/cousin, Viserys Targaryen (Harry Lloyd), and a sister/cousin, the Mother of Dragons.