Maekar Royce (Dancing Dragons)

Lord Maekar Royce is the eldest son of Daemon Targaryen and his first wife, Rhea Royce. As a condition of being named heir he was made to take the Royce name. Maekar and his father have a fraught relationship, but he sided with the Blacks during the Dance of the Dragons. Unlike his siblings, however, his dragon died in infancy, so he is not a dragonrider.