Aemma Arryn is the first of Viserys I Targaryen's two wives. She is his first cousin through her mother, Daella, and the mother of his daughter and heir, Rhaenyra Targaryen. Aemma was unhappy when Viserys married his second wife, Alicent Hightower, but she did not protest and accepted the union. Her daughter was the heir. However, a deep hatred formed between the two branches of the family as Alicent worked to depose of Rhaenyra as Vicerys' heir. She is a dragonrider to the dragon Balerion--the oldest and largest dragon in the world which was once ridden by the first king of Westeros, Aegon I Targaryen.