Editing 1347 (section)

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On May 20 [[Cola di Rienzo]], a Roman commoner, declared himself Emperor of Rome in front of a huge crowd in response to what had been several years of power struggles among the upper-class barony. Pope [[Clement VI]], along with several of Rome's upper-class nobility, united to drive him out of the city in November.<ref>Garwood, Duncan. Lonely Planet Rome: City Guides. Hawthorn: Lonely Planet Publications, 2006. {{ISBN|1-74059-710-9}} pp. 70</ref> In October, Genoese ships arrived in southern Italy with the Black Plague, beginning the spread of the disease in the region.<ref name = bp/><ref>Corporation, Marshall. Exploring the Middle Ages. New York (Box 410: Marshall Cavendish Corporation, 2006. {{ISBN|0-7614-7615-6}} pp. 99</ref>
Jews were first accused of ritual murders in Poland in 1347.<ref>Weinryb, Bernard. The Jews of Poland. Philadelphia: Jewish Publication Society of America, 1973. {{ISBN|0-8276-0016-X}} pp. 27</ref> [[Casimir III of Poland]] issues Poland's first codified collection of laws after the diet of [[Wiślica]]. Separate laws are codified for greater and lesser Poland.<ref>Fisher, HH. America and the New Poland. City: Fisher Press, 2007. {{ISBN|1-4067-5084-0}} pp. xv</ref><ref>Morfill, William. Poland. London: T. F. Unwin, 1893. {{ISBN|0-8369-9919-3}} pp. 42</ref>