Queen as King traces the origins of San Isidoro in León as a royal monastic complex, following its progress as the site changed from a small eleventh-century palatine chapel housed in a double monastery to a great twelfth-century pilgrimage church served by Augustinian canons. Its most groundbreaking contribution to the history of art is the recovery of the lost patronage of Queen Urraca (reigned 1109-1126). Urraca maintained yet subverted her family’s tradition of patronage on the site: to understand her history is to hold the key to the art and architecture of San Isidoro. This new approach to San Isidoro and its patronage allows a major Romanesque monument to be understood more fully than before.