Princess Rhaenyra Targaryen
Played by Milly Alcock (seen here), the young Princess Rhaenyra is the daughter of King Viserys I and his first wife, who died later giving birth to a second son. In the books, when that son died, Prince Daemon supposedly made jokes about it while at a brothel, which enraged the normally placid Viserys so much he formally declared Rhaenyra as his heir to the Iron Throne.
