The Rogue Prince, or, a King's Brother is a novelette by George R. R. Martin, published in the 2014 Bantam Spectra anthology Rogues. It is set on the continent of Westeros of Martin's A Song of Ice and Fire series, hundreds of years before the events of A Game of Thrones (1996) during the reign of King Viserys I Targaryen. The Rogue Prince serves as a prequel to Martin's earlier 2013 novella The Princess and the Queen and focuses on the reign of Viserys I, from his grandfather Jaehaerys I Targaryen's death to his own. It chronicles the evolving complicated relationship between Viserys and his charismatic-yet-unruly younger brother Daemon, who is the titular antihero, and Viserys' plan for succession to his daughter from his first marriage even though he has a son from his second marriage, which cements a rivalry within the Targaryens that plays out in The Princess and the Queen. The work is presented as the writing of the fictional Archmaester Gyldayn, also the "author" of Martin's The Princess and the Queen. Source: Wikipedia (en)