Monica was the mother of Augustine who as a young man led a rather wild life.  Being a devout Christian, Monica prayed for the conversion of her son who was following heretical practices.  Because Augustine insisted on proclaiming his heretical views, Monica made him leave her house.  Shortly afterwards Monica had a vision urging her to reconcile with her son.  At the same time a bishop told her “the child of those tears shall never perish.”  Monica decided to follow her son to Rome and Milan where she met St Ambrose.  Together they were able to get Augustine to turn away from his sinful lifestyle and turn towards God.