The Book of Brothers

The Book of the Brothers, informally called The White Book, is the tome that records the deeds of every knight who has ever served in the three hundred year history of the Kingsguard. The book is kept in the Red Keep in the White Sword Tower, where the knights of the Kingsguard have their sleeping cells. The book is in the uppermost floor of the tower in the room where the seven meet. It is the responsibility of the current Lord Commander of the Kingsguard to update the entries in the book.

Each knight who has been made a member of the Kingsguard since the reign of King Aegon I Targaryen has a page within the book detailing his deeds. On the top left-hand corner of the page his personal arms are drawn while at the bottom right-hand corner are the arms of the Kingsguard.

In the books
In the A Song of Ice and Fire novels, the White Book is described as being two feet tall, a foot and a half wide, and a thousand pages thick. In the show it is considerable smaller.