St. Veronica
According to Tradition, when St. Veronica saw Jesus fall beneath the weight of the cross He carried to his pending crucifixion, she was so moved with pity she pushed through the crowd past the Roman Soldiers to reach Jesus. She used her veil to wipe the blood and sweat from His face. The soldiers forced her away from Jesus even as He peered at her with gratitude. She bundled her veil and did not look at it again until she returned home. When she finally unfolded the veil--history does not clarify exactly what kind of material the veil was made from--it was imprinted with an image of Christ's face.

Some stories have alluded to St. Veronica being present at the beheading of St. John the Baptist. Others claim Veronica (Bernice) was a woman whom Jesus cured from a blood issue before His arrest in Jerusalem.

There is no reference to the biography of St. Veronica in the canonical Gospels. Her act of kindness and charity is represented in the Sixth of the Fourteen Stations of the Cross.

St. Veronica is believed to be buried in the tomb in Soulac or in the church of St. Seurin at Bordeaux, France. Her veil (the Veronica) is kept at St. Peter's Basilica in the Vatican at Rome.

http://www.catholicculture.org/culture/liturgicalyear/calendar/day.cfm?date=2013-07-12