The Order of the Golden Spur (, ), officially known also as the Order of the Golden Militia (, ), is a papal order of knighthood conferred upon those who have rendered distinguished service in propagating the Catholic faith, or who have contributed to the glory of the Church, either by feat of arms, by writings, or by other illustrious acts. History Before 19th century: a noble order It is accounted the earliest papal chivalric institution. The Order of the Golden Spur had its origins in the title Count palatine of the Lateran Palace, which was in the gift of the Holy Roman Emperor in the fourteenth century: Charles IV, Holy Roman Emperor conferred the title on one Fenzio di Albertino di Prato, 15 August 1357, at Prague. The Order began to be associated with the inheritable patent of nobility in the form of count palatinate during the Renaissance; Emperor Frederick III named Baldo Bartolini, professor of civil law at the University of Perugia, a count palatinate in 1469, entitled in turn to confer university degrees. "Bartolini also received the Knighthood of the Golden Spur, a title that sometimes accompanied the office of count palatinate in the Renaissance", according to the historian of universities Paul F. Grendler; the Order of the Golden Spur, linked with the title of count palatinate, was widely conferred after the Sack of Rome, 1527, by Charles V, Holy Roman Emperor; the text of surviving diplomas conferred hereditary nobility to the recipients. Among the recipients was Titian (1533), who had painted an equestrian portrait of Charles. Close on the heels of the Emperor's death in 1558, its refounding in Papal hands is attributed to Pope Pius IV in 1559. By the mid-18th century the Order was being so indiscriminately bestowed that Casanova remarked "The Order they call the Golden Spur was so disparaged that people irritated me greatly when they asked me the details of my cross;" he had the grace to add that he would have been pleased if he had been able to answer "mon Toison", and he did habitually wear it, nevertheless, on its scarlet riband. In 1777 Wolfgang Amadeus Mozart had his portrait painted with the star-encircled cross of the order on his coat, and the Order granted to Giovanni Battista Piranesi permitted him to sign his etchings Cav. G.B. Piranesi. The Order was granted to "those in the pontifical government, artists,