Saint Victorinus of Pettau or of Poetovio (died 303 or 304) was an Early Christian ecclesiastical writer who flourished about 270, and who was martyred during the persecutions of Emperor Diocletian. A Bishop of Poetovio (modern Ptuj in Slovenia; German: Pettau) in Pannonia, Victorinus is also known as Victorinus Petavionensis, Poetovionensis or Victorinus of Ptuj.[1]