New Catholic Dictionary – Pope Saint Pius I

Pope Pius IDerivation

  • Latin: devout


Reigned c.142 to c.154. Born in Italy. The fact that Saint Justin expounded Christian teaching in Rome, and that the three heretics Valentinus, Cerdon, and Marcion visited there, prove the primacy of the see in this century. Feast, Roman Calendar, 11 July.

MLA Citation

  • “Pope Saint Pius I”. New Catholic Dictionary. CatholicSaints.Info. 11 July 2015. Web. 17 February 2019. <>