Analysis of information sources in references of the Wikipedia article "미트라" in Korean language version.
Cumont's... argument was straightforward and may be summarized succinctly: the name of the god of the cult, Mithras, is the Latin (and Greek) form of the name of an ancient Iranian god, Mithra; in addition, the Romans believed that their cult was connected with Persia (as the Romans called Iran); therefore we may assume that Roman Mithraism is nothing other than the Iranian cult of Mithra transplanted into the Roman Empire.