Theonistus

Saint Theonistus was likely born in late antiquity, though his birthplace is uncertain; ancient traditions variously remember him as a bishop from an island called Namsia or as bishop of Philippi. He is venerated together with his companions Tabra and Tabratha, whose African names hint at a Church marked by persecution and exile. Medieval accounts, though tangled in chronology, agree in portraying Theonistus as a steadfast shepherd and missionary. After journeys that include Rome and northern Italy, he and his companions are said to have labored for the Gospel across distant regions, enduring hostility from heretics and persecutors. Their witness culminated in martyrdom by beheading near the Veneto, remembered especially at Roncade or Altino, with the striking detail that they were honored as cephalophores—saints who, by God’s power, carried their severed heads—signs of unwavering faith even unto death. Devotion to Theonistus took deep root in northeastern Italy, with monasteries and local calendars preserving his memory. He is honored as patron of Campocroce and Casier. His feast day is October 30.