Religion in York can be traced back to the City's foundation in Roman times with evidence of York's first Christian community dating from this period. In 1086, the Domesday Book listed eight churches and a Minster (not the current building). The number had declined to 39 by 1428 due to taxation; 19 medieval churches are in use today. History Roman Polytheism A range of evidence about Roman religious beliefs of the people of Eboracum have been found including altars to Mars, Hercules, Jupiter and Fortune, while phallic amulets are the most commonly found type of good luck charm. In terms of number of reference the most popular deities were the spiritual representation (genius) of Eboracum and the Mother Goddess, there is also evidence of local or regional deities. Evidence showing the worship of eastern deities has also been found during excavations in York. For example, evidence of the Mithras cult, which was popular among the military, has been found including a sculpture showing Mithras slaying a bull and a dedication to Arimanius, the god of evil in the Mithraic tradition. Another example is the dedication of a temple to Serapis a Hellenistic-Egyptian God by the Commander of the Sixth Legion. Christianity There was also a Christian community in Eboracum although it is unknown when this was first formed and in archeological terms there is virtually no record of it. The first evidence of this community is a document noting the attendance of Bishop Eborius of Eboracum at the Council of Arles in 314. The Episcopal see at Eboracum was called Eboracensis in Latin and Bishops from the See also attended the First Council of Nicaea in 325, the Council of Sardica, and the Council of Ariminum. On 16 March 1190, a mob of townsfolk forced the Jews in York to flee into Clifford's Tower, which was under the control of the sheriff. The castle was set on fire and the Jews were massacred. It is likely that various local magnates who were debtors of the Jews helped instigate this massacre or, at least, did nothing to prevent it. It came during a time of widespread attacks against Jews in Britain. The Jewish community in York did recover after the massacre and a Jewish presence remained in York until the expulsion of Jews from England took place in 1290. In the intervening years, though, the pressure on the Jews of Yorkshire