Sybota). This new alliance was one of the chief immediate causes of the Peloponnesian War, in which Corcyra was of considerable use to the Athenians as a naval station, but did not render much assistance with its fleet. The island was nearly lost to Athens by two attempts of the oligarchic faction to effect a revolution; on each occasion the popular party ultimately won the day and took a most bloody revenge on its opponents (427 BC and 425 BC). During the Sicilian campaigns of Athens Corcyra served as a supply base; after a third abortive rising of the oligarchs in 410 BC it practically withdrew from the war. In 375 BC it again joined the Athenian alliance; two years later it was besieged by a Spartan force, but in spite of the devastation of its flourishing countryside held out successfully until relieved. In the Hellenistic period Corcyra was exposed to attack from several sides. In 303 BC, after a vain siege by Cassander, the island was occupied for a short time by the Lacedaemonian general Cleonymus of Sparta, then regained its independence and later it was attacked and conquered by Agathocles of Syracuse. He offered Corfu as dowry to his daughter Lanassa on her marriage to Pyrrhus, King of Epirus. The island then became a member of the Epirotic alliance. It was then perhaps that the settlement of Cassiope was founded to serve as a base for the King of Epirus' expeditions. The island remained in the Epirotic alliance until 255 BC when it became independent after the death of Alexander, last King of Epirus. In 229 BC, following the naval battle of Paxos, it was captured by the Illyrians, but was speedily delivered by a Roman fleet and remained a Roman naval station until at least 189 BC. At this time, it was governed by a prefect (presumably nominated by the consuls), but in 148 BC it was attached to the province of Macedonia. In 31 BC, it served Octavian (Augustus) as a base against Mark Antony. Roman and medieval history Christianity arrived in Corfu early; two disciples of Saint Paul, Jason of Tarsus and Sosipatrus of Patras, taught the Gospel, and according to tradition the city of Corfu and much of the island converted to Christianity. Their relics were housed in the old cathedral (at the site of the current Old Fortress, before a dedicated church was