St. Boniface, a Roman martyr, suffered at Tarsus, the capital of Cilicia, at the beginning of the Fourth Century. He had gone thither, as a penance for the sins of his past life, to recover relics of the saints. After his martyrdom his body was taken back to Rome and enshrined in a church that was erected in his honor.

(Source: The New Roman Missal by Father Lasance, p 1694).