Costanzo of Ancona was a sixth-century monk who lived in the city of Ancona. He served within the temple dedicated to Saint Stephen, the first martyr. Known for his profound holiness, he attracted many followers who traveled from distant lands to seek his spiritual guidance and wisdom. He is recognized as a saint in the Catholic and Orthodox traditions.
Life and service

During the sixth century, Costanzo lived as a monk in Ancona. His religious life was centered around the temple of Saint Stephen, where he performed his duties. His reputation for sanctity grew so significant that people from far-off regions would visit him to receive instruction and spiritual counsel.
Veneration
He is commemorated as a saint in both Catholic and Orthodox traditions. His feast day is observed annually on September 23. Because of his historical importance, he is honored within the pre-schism liturgical traditions of the Christian church.
