Jewish residents in the cities of Antwerp and Mechelen and in the northern region of Geldern. Between 1347 and 1351, Europe was hit by the plague or Black Death. This resulted in a new theme in medieval anti-Semitic rhetoric. The Jews were held responsible for the epidemic and for the way it was rapidly spreading, because presumably they were the ones who had poisoned the water of springs used by the Christians. Various medieval chronicles mention this, e.g., those of Radalphus de Rivo (c. 1403) of Tongeren, who wrote that Jews were murdered in the Brabant region and in the city of Zwolle because they were accused of spreading the Black Death. This accusation was added to other traditional blood libels against the Jews. They were accused of piercing the Host used for communion and killing Christian children to use as a blood offering during Passover. Local Jewish communities were often murdered in part or entirely or exiled in hysterical pogroms. In May 1370, six Jews were burned at the stake in Brussels because they were accused of theft and of desecrating the Holy Sacrament. In addition, documentation can be found of instances in which Jews were abused and insulted, e.g., in the cities of Zutphen, Deventer and Utrecht, for allegedly desecrating the Host. Rioters massacred the majority of the Jews in the region and expelled those who survived. In 1349, the Duke of Guelders was authorized by the Emperor Louis IV of the Holy Roman Empire of Germany to receive Jews in his duchy, where they provided services, paid a tax and were protected by the law. In Arnhem, where a Jewish physician is mentioned, the magistrate defended him against the hostilities of the populace. When Jews settled in the diocese of Utrecht is unknown, but rabbinical records regarding Jewish dietary laws speculated that the Jewish community there dated to Roman times. In 1444, Jews were expelled from the city of Utrecht. Until 1789, Jews were prohibited from staying in the city overnight. They were tolerated in the village of Maarssen, two hours distant, though their condition was not fortuitous. But, the community of Maarssen was one of the most important Jewish settlements in the Netherlands. Jews were admitted to Zeeland by Albert, Duke of Bavaria. In 1477, by the marriage of Mary of Burgundy to the Archduke Maximilian, son of Emperor Frederick III, the Netherlands were united to