St. Judas Cyriacus; Spanish: Quirico, Italian: Ciriaco, d. ca. AD 360, is the patron saint of Ancona, Italy. His feast day is celebrated in the Catholic Church on 4 May.
Martyrdom of St. Quirico. Barcelona, 12th century
The martyrdom of Judas Cyriacus.
Judas Cyriacus by Palma il Giovane
The body of Judas Cyriacus in the Cathedral of Ancona.
In Christian tradition, the True Cross is the original wooden cross on which Jesus of Nazareth was crucified.
Judas Cyriacus
…identified this saint with the Jew named Judas Quiriacus or Kyriakos. According to legend, a Jew Judas Kyriakos aided the Empress Helena in finding the True Cross, which had been buried at Golgotha after the crucifixion. The oldest extant Syriac text of the legend of the discovery of the True Cross by Judas…
Christ Crucified by Giotto, c. 1310
The Queen of Sheba venerates the wood from which the Cross will be made (mid 15th-century fresco by Piero della Francesca in San Francesco, Arezzo).
The Finding of the True Cross, Agnolo Gaddi, Florence, 1380
The three crosses are discovered. An injured young man is healed by the True Cross. Fifteenth-century frescoes at the Church of San Francesco, Arezzo by Piero della Francesca.