Had to search this out, a little late to get it. I didn't realize that Danny had 2 brothers and that one was much older.
Can I get some clarification on this story line?
Rhaenys Targaryen was the daughter of Prince
Rhaegar Targaryen and Princess
Elia Martell. She had a younger full-brother,
Aegon, and a younger paternal half-brother,
Jon Snow.
[1][2] For mysterious reasons, Rhaegar allegedly
abducted Jon's mother
Lyanna Stark, sparking a
Rebellion that ultimately deposed
House Targaryen as the ruling house of
Westeros. Rhaegar was killed by
Robert Baratheon, who was Lyanna's betrothed, at the
Battle of the Trident. Soon afterwards, Rhaenys and Aegon were brutally murdered along with their mother by
SerGregor Clegane during the
Sack of King's Landing.
[3]
Season 3
Thoros of Myr reminisces how he witnessed
Gregor Clegane presenting the bodies of Prince Aegon and Princess Rhaenys before the
Iron Throne.
[4]