Prince Aegon Targaryen
From Asoiaf
Prince Aegon of House Targaryen was the son and second child of Prince Rhaegar Targaryen and Princess Elia of House Martell.
283 AL Rhaegar was slain by Robert Baratheon on the Trident.
The Sack of King's Landing by Tywin Lannister, Lord of Casterly Rock and Eddard Stark, Lord of Winterfell. Prince Aegon Targaryen was ripped from the breats of his mother Princess Elia and killed before her eyes.