From the Anglican Breviary:
This Praxedes (as we know from ancient records) was a maiden of Rome in the second century. The story told of her for many centuries is that she constantly assisted with money, labour, comfort, and every helpful office of Christian charity all those Christians whom the Emperor Marcus Antonius was at that time hunting down like wild beasts. Some she hid in her house, some she exhorted to firmness in professing the Faith, of some she buried the bodies. For those in prison and those toiling in slavery she supplied every need. At last, the sight of such butchery of Christians was more than she could bear, and she implored God that, if it were expedient for her to die, she might be released from such suffering. And on July 21 she went to God. Her body was laid by Pastor the Priest in the double grave of her father, Pudens (said to be a pupil of St. Peter), and her sister Pudentiana, which was in the cemetery of Priscilla on the Salarian Way.
Graciously hear us, O God of our salvation: that, like as we do rejoice in the festival of the blessed Virgin St. Praxedes, so we may learn to follow her in all godly and devout affections. Through Jesus Christ our Lord. Amen.