There are at least five saints named Irene who are venerated in the West. This
St. Irene, the Virgin and Great-Martyr, is more popular in the East. According to legend, her father Licinius, angered at her conversion, planned to have her trampled by horses. Irene's prayers saved him from death and led him to conversion. She was later martyred at Ephesus.
The time frame varies. Some say she was baptized by Timothy, but if this is the companion of Paul, she could hardly have died in the Diocletian persecution (c. 300), as others say.
Her feast day is 5 May.