Ser Barristan Selmy, also known as Barristan the Bold or Arstan Whitebeard, is an anointed knight of House Selmy. He served as a member of the Kingsguard to Kings Jaehaerys II and Aerys II Targaryen. He was named Lord Commander under King Robert I Baratheon. He was dismissed from the order by King Joffrey I Baratheon. He later served as Lord Commander of the Queensguard to Queen Daenerys I Targaryen.