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

(The tale, oft told, that Lord Tywin sent his bard to deliver the ultimatum, and commanded him to sing “The Rains of Castamere” for Lord Denys and the Lace Serpent is a colorful detail that is, alas, unsupported by the records).