This examination of six usurper kings of England, and the people and circumstances surrounding them, is “a masterpiece of academic scholarship” (Midwest Book Review). In the Middle Ages, England had to contend with a string of usurpers who disrupted the British monarchy—and ultimately changed the course of European history by deposing England’s reigning kings and seizing power for themselves. Some of the most infamous usurper kings to come out of medieval England include William the Conqueror, Stephen of Blois, Henry Bolingbroke, Edward IV, Richard III, and Henry Tudor. Did these kings really deserve the title of usurper, or were they unfairly vilified by royal propaganda and biased chroniclers? This book examines the lives of these six medieval kings, the circumstances that brought each of them to power, and whether or not they deserve the title of usurper. Along the way readers will hear stories of some of the most fascinating people of medieval Europe, including Empress Matilda, the woman who nearly succeeded at becoming the first ruling Queen of England; Eleanor of Aquitaine, the queen of both France and England, who stirred her own sons to rebel against their father, Henry II; Richard II, whose cruel and vengeful reign caused his own family to overthrow him; Henry VI, Margaret of Anjou, Richard of York, and Edward IV, who struggled for power during the Wars of the Roses; the notorious Richard III and his monstrous reputation as a child-killer; and Henry VII, who rose from relative obscurity to establish the most famous royal family of all time: the Tudors.