The book, 'The Ecclesiastical Orders of Knighthood' is an informative account of the history, organization, emblems and membership requirements of the various Orders connected with the Catholic Church. The book mentions the two prominent groupsâone which follows the Papal Orders of Knighthood and the other which follows chivalric orders that in turn derive from medieval military orders. In addition, Part One deals with the historical backgroundâthe origin and development of Knighthood in general. Parts Two and Three treat the Religious Military Orders which originated in the Holy LandâThe Order of Malta, the Order of the Holy Sepulchre, the Teutonic Orderâand the Military Orders of Spain and Portugal. Finally, Part Four treats of those Orders which are directly bestowed by the Holy Seeâthe Order of Christ, the Order of the Golden Spur, the Order of Pius, the Order of St. Gregory, and of St. Sylvester. In addition the papal decorations are described.