Career
He is confused often with Saint Antoninus of Piacenza, who is venerated as a martyr of 303 AD. Nor is he related to the imperial formal document called the Antonine Itinerary. Of Antoninus, the historical pilgrim, F. Bechtel reported in The Catholic Encyclopedia (1910). "In manuscripts he is sometimes styled Antoninus the Martyr, through ignorant confusion of the writer with the martyr Saint Antoninus who is venerated at Piacenza.
Although he covered in his travels nearly the same extensive territory as the Spanish nun, his work contains but few details not found in other writers.
lieutenant is, moreover, marred by gross errors and by fabulous tales which betray the most naive credulity."
Antoninus" description of the chalice of onyx that was venerated in the Church of the Holy Sepulchre and of the Holy Lance in the Basilica of Mount Zion form early attestations of the cultus of these two relics.