St. Polycarp is a Christian saint who lived in the second century AD and was the bishop of Smyrna. He was a revered figure among the early Christians, and his writings are seen as an important source of information about the early Church. Synonyms for the name of St. Polycarp include Polycarpus, Polycarpos, and Polycarp of Smyrna. The saint is often called the "apostolic father" due to his close association with the apostles Peter and John. St. Polycarp's feast day is celebrated on February 23rd in the Western Church and on February 23rd or 26th in the Eastern Church.