Pelagia (Greek: Πελαγία; d. early 4th century), distinguished as Pelagia of Tarsus and Pelagia the Martyr (Πελαγία ἡ Μάρτυς, Pelagía ē Mártys), is a legendary Christian saint and martyr who lived in Tarsus in Cilicia (southeastern Asia Minor) during the reign of Roman emperor Diocletian.[3] Originally, her feast day was celebrated on October 8, in common with SS Pelagia the Virgin & Pelagia the Harlot,[4] both of Antioch and one or both of whom her story is probably modeled after.[5] In the Roman Catholic Church, the feast was eventually moved to May 4.[2]