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xv Timeline Names of Roman emperors are in small caps under year of accession. 138 Antoninus Pius 140 (?) Valentinus the Gnostic comes to Rome from Egypt Mid-140s (?) Birth of Irenaeus—at Smyrna? 157 (23 Feb.) Martyrdom of Polycarp in Smyrna 161 Marcus Aurelius (with Lucius Verus until 169) Early 160s (?) Irenaeus moves to Lyon 175–189 Eleutherus bishop of Rome 177/180 Persecution in Lyon and Vienne; Irenaeus becomes bishop of Lyon 180–185 (?) Writing of Against the Heresies 181 Commodus 185–190 (?) Writing of Demonstration of the Apostolic Preaching 189–199 Victor bishop of Rome 193 Civil war and accession of Septimius Severus ??? Death of Irenaeus ...

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