Pope Saint Clement I: monastic mural

Image: Saint Clement I, one of the first century Bishops of Rome, considered successor to Saint Peter as leaders of the Catholic Church (mural in a monastery of Saint Clement, Macedonia).

Pope Saint Clement I (aka Saint Clement of Rome or Clemens Romanus) is listed from an early date as a Bishop of Rome. Not much is known about Pope Clement's life, but according to Tertullian, he was consecrated by Saint Peter, and he is known to have been a leading member of the church in Rome in the later part of the first century.