Sept. 17, 1274

Papal bull “Si Mentes Fidelium,” issued by Gregory X to the Archbishop and Bishop of York [Present-day United Kingdom]: “We command that the Jews be compelled by a secular power to cancel the interest [charged to the Crusaders], and, until they have released it, be denied any intercourse with the Christian faithful, in business or otherwise, under penalty of excommunication [of the Christians].”
Grayzel, Solomon. The Church and the Jews in the XIIIth Century, Volume II (1254-1315). The Jewish Theological Seminary of America: New York, 1989. Page 126. Researched by Dominik Jacobs 10/28/2019