“Prohibition” issued by Pope Nicholas V [Papal States; Present-day Vatican City, Italy, France]: “[…] Jews are forbidden to loan money against interested […] Christians are prohibited from paying Jews any [accumulated and] outstanding interest. […]” [Researcher’s note: Many historians believe that this prohibition issued by the pope can be traced back to Johann Capistrano, who was an anti-Semite and a rabble-rouser, and the influence of the Spanish royal court on the Papacy.]
Vogelstein, Hermann and Paul Rieger: Geschichte Der Juden in Rom. Zweiter Band; 1420-1870 (History of the Jews in Rome. Volume II. 1420-1870); (Berlin; 1895); Researched and Translated by Ziba Shadjaani 6/1/2018