Visenya Targaryen
From Asoiaf
Visenya of House Targaryen was the sister of Aegon I Targaryen, King of the Seven Kingdoms and Rhaenys Targaryen.
Together they sailed from Dragonstone to conquer the Seven Kingdoms during the Wars of Conquest.
Aegon I married both Visenya and Rhaenys. Visenya and Aegon had a son, Maegor I.