Book excerpt: A surprising look at women who wielded power in medieval Europe, from queens to concubines to abbesses. Medieval society might expect the elite women who decorated its courts to play the role of Queen Guinevere, but many of these women had very different ideas. Great queens, who sometimes ruled in their own right, fought wars and forged empires. Noblewomen acted behind the scenes to change the course of politics. Far from cloistered off from the world, powerful abbesses played the role of kingmaker. And concubines had a role to play as well, both as political actors and as mothers of children who might change a country’s destiny. They experienced tremendous success and dramatic downfalls. This book tells the stories of women from across medieval Europe, from a Danish queen who waged political war to form a Scandinavian empire to a Tuscan countess who joined her troops on the battlefield. Whether they wielded power in battle, from a convent, or from a throne—or even in the bedchamber—these women were far from damsels in distress waiting for their knights in shining armor.