 For example, Ned and Robb Stark resemble Richard, 3rd Duke of York, and his son Edward IV, and Queen Cersei resembles both Margaret of Anjou and Elizabeth Woodville.Martin immersed himself in many diverse medieval topics such as clothing, food, feasting, and tournaments to have the facts at hand if needed during writing.The series was in particular influenced by the Hundred Years' War, the Crusades, the Albigensian Crusade, and the Wars of the Roses, although Martin refrained from making any direct adaptations.