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St. Irenaeus of Lyons (early 2nd Cen, – 202CE) was an early Church Father who listened to teachings of Polycarp (a disciple of the apostle John). Irenaeus was named the bishop of Lugdunum in Gaul which was then part of the Roman Empire but is now located in Lyons, France. Irenaeus’ writings are noted to have been very influential in the early development of Christian theology.

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