In the 12th century, Jews arrived to the Slovene Lands fleeing poverty in Italy and central Europe. Even though they were forced to live in ghettos, many Jews prospered. Relations between Jews and the local Christian population were generally peaceful. In Maribor, Jews were successful bankers, winegrowers and millers. Several "Jewish Courts" ("Judenhof") existed in Styria, settling disputes between Jews and Christians. Israel Isserlein, who authored several essays on medieval Jewish life in Lower Styria, was the most important rabbi at the time, having lived in Maribor. In 1397, Jewish ghettos in Radgona and Ptuj were set ablaze by anonymous anti-Jewish assailants.