“Knights, Lords, and Ladies: In Search of Aristocrats in the Paris Region, 1180-1220” by John W. Baldwin is a textbook published by University of Pennsylvania Press in 2019 as part of “The Middle Ages Ser.” The book delves into the social classes and economic disparities of medieval Europe, specifically focusing on the aristocrats in the Paris region during the early 13th century. With 432 pages and a hardcover format, this book in English offers a comprehensive look at the European history and social structures of the time.