"Fuego y Sangre" (Fire & Blood) is a companion book to the A Song of Ice and Fire series, written by George R. R. Martin. The book is presented as a historical text within the world of Westeros, written by Maester Lemon, a maester of the Citadel. However, the book is actually a compilation of stories, legends, and histories of House Targaryen, the ruling dynasty of the Seven Kingdoms.