Evidence of Roman religious beliefs in York 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 York and the Mother Goddess; there is also evidence of local or regional deities. There was also a Christian community in York although it is not known when it was first formed and there is virtually no archaeological 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 (314), and bishops also attended the First Council of Nicaea in 325, the Council of Sardica, and the Council of Ariminum.