Holy Martyr Antonina of Nicaea in Bithynia.
March 1
St. Antonina was a Christian woman of Nicaea in Bithynia who suffered during the persecutions of the early fourth century. Brought before the governor for refusing to sacrifice to idols, she was subjected to torture and imprisonment, and tradition relates that she was finally sewn into a sack and cast into a lake.
The Church honors her as a virgin martyr whose steadfastness under torment bore witness to Christ before the pagans of her city. Her memory is kept on March 1.
June 12
Saint Antonina was a Christian virgin of Nicaea in Bithynia who confessed Christ before the governor during the persecution of Diocletian. Tradition relates that she endured many tortures and was finally drowned, sewn into a sack and cast into a lake.
Feast day
On the New Calendar, Antonina of Nicaea is commemorated on March 1. Churches on the Old (Julian) Calendar keep the feast on March 14 of the civil calendar.
On the New Calendar, Antonina of Nicaea is commemorated on June 12. Churches on the Old (Julian) Calendar keep the feast on June 25 of the civil calendar.
Who celebrates a name day
People with these names keep their name day on this feast:
Also commemorated on March 1

Domnina the New
Holy Woman, Δομνίνα
Venerable Domnina the New of Syria, ascetic of the fifth century.
Name days: Domnina
Paraskevas of Trebizond
Martyr, Παρασκευάς
Holy New Martyr Paraskevas of Trebizond, who suffered under the Ottomans.
Name days: Paraskevas, Paraskeuas
Markellos and Antonios of Syria
Martyr, Μάρκελλος
Holy Martyrs Markellos and Antonios of Syria, burned for the faith.
David of Wales
Hierarch, Δαβίδ της Ουαλίας
Saint David, Bishop of Menevia, patron and enlightener of Wales.