Quicksilver hatched on Dragonstone in 7 AC and bonded as a hatchling with the infant Prince Aenys, born the same year; the sickly boy's health mended from that day, and the whispers that he was no son of Aegon the Conqueror died with them. She was Aenys's favorite mount all his life. He flew her to Sunspear in 23 AC for the feast that marked ten years of peace with Dorne, and from Highgarden to his father's funeral on Dragonstone in 37 AC, but when Harren the Red seized Harrenhal that year and Lord Tully urged him to descend upon the castle as his father had, Aenys would not. She lit his own pyre in 42 AC, with Silverwing and Vermithor adding their flames to hers.
When Maegor usurped the throne, Quicksilver was left in King's Landing while the rightful heir, Prince Aegon, sheltered in the westerlands; in 43 AC he and his wife Rhaena slipped into the city during the king's absence and claimed her at last. Aegon rode her to Pinkmaiden to raise fifteen thousand men against his uncle and led them toward the capital, until a host of crownlanders barred his road south of the Gods Eye and Maegor came out of the sky upon Balerion. Quicksilver was a quarter the Black Dread's size and her pale white fire counted for nothing; Balerion crushed her neck in his jaws and tore a wing from her body, and dragon and prince fell together beneath the Gods Eye.