"Nepotism in Rome, or the History of the Nephews of the Popes from the time of Sixtus IV to the death of the last Pope Alexander VII" is a detailed scientific work by the Italian historian Gregorio Leti. The book highlights the complex system of papal nepotism, which has historically been an important component of the power and influence of Popes in the Roman Church. The author examines the role and influence of the Pope's nephews on the politics, culture and society of Europe during that period. Lety carefully analyzes the reigns of each mentioned Pope and his nephews, revealing the complex interrelationships of domestic politics and international relations in the grand history of the papacy. This book is an important source for understanding the history of the Roman Church and Europe as a whole.