The World of Ice & Fire: The Untold History of Westeros and the Game of Thrones (A Song of Ice and Fire)

by George R.R. Martin

Daemon was mercurial and quick to take offense, but he was dashing, daring, and dangerous. He was knighted at six-and-ten, like Maegor I, and Jaehaerys I himself gave Daemon the Valyrian steel blade Dark Sister for his prowess.