Cathedra Petri Books 9,10 And 11 : Kessinger Publishing : 9781165952151 : 1165952157 : 10 Sep 2010 : Cathedra Petri Books 9, 10 and 11 is a historical book written by Thomas Greenwood in 1861. The book provides a detailed account of the political history of the Great Latin Patriarchate, which was the highest religious office in the Roman Catholic Church during the medieval period. The book is divided into three parts, each covering different aspects of the Patriarchate's political history.Book 9 focuses on the early history of the Patriarchate, from its establishment in the 4th century to the 11th century. It covers the role of the Patriarchate in shaping the political landscape of Europe during this period, including its relationship with the Holy Roman Empire and the Byzantine Empire.Book 10 covers the period from the 11th century to the 16th century, which saw significant changes in the political and religious landscape of Europe. The book covers the rise of the Papacy as a politica