Tychicus is one of Paul's companions in the New Testament

New Testament

The New Testament is the second major division of the Christian biblical canon, the first such division being the much longer Old Testament....

. He is mentioned five times (Acts 20:4; Colossians 4:7; Ephesians 6:21; 2 Timothy 4:12; Titus 3:12).

• Acts 20:4 states that Tychicus was from the Roman province of Asia
• The Western text
  Western text-type
  The Western text-type is one of several text-types used in textual criticism to describe and group the textual character of Greek New Testament manuscripts...
  
   indicates that he was an Ephesian.
• In Ephesians 6:21, Paul calls Tychicus a "dear brother and faithful servant in the Lord" (NIV),
• while in Colossians
  Epistle to the Colossians
  The Epistle of Paul to the Colossians, usually referred to simply as Colossians, is the 12th book of the New Testament. It was written, according to the text, by Paul the Apostle to the Church in Colossae, a small Phrygian city near Laodicea and approximately 100 miles from Ephesus in Asia...
  
  , he says he is "a dear brother, a faithful minister and fellow servant in the Lord."

In both Ephesians and Colossians, Paul indicates that he is sending Tychicus to the Christians to whom he is writing, in order to encourage them.

The Catholic Encyclopedia

Catholic Encyclopedia

The Catholic Encyclopedia, also referred to as the Old Catholic Encyclopedia and the Original Catholic Encyclopedia, is an English-language encyclopedia published in the United States. The first volume appeared in March 1907 and the last three volumes appeared in 1912, followed by a master index...

notes that different traditions make him out to be the Bishop

Bishop

A bishop is an ordained or consecrated member of the Christian clergy who is generally entrusted with a position of authority and oversight. Within the Catholic Church, Eastern Orthodox, Oriental Orthodox Churches, in the Assyrian Church of the East, in the Independent Catholic Churches, and in the...

 of Colophon, Chalcedon

Chalcedon (titular see)

Chalcedon is a Catholic titular see, having the status of archdiocese. During the seventeenth century, the title Bishop of Chalcedon was officially given to the Roman Catholic Bishop of England after 1623.-History:...

 or Neapolis in Cyprus

Limassol

Limassol is the second-largest city in Cyprus, with a population of 228,000 . It is the largest city in geographical size, and the biggest municipality on the island. The city is located on Akrotiri Bay, on the island's southern coast and it is the capital of Limassol District.Limassol is the...

.

Hippolytus of Rome lists Tychicus as one of the seventy disciples

Seventy Disciples

The seventy disciples or seventy-two disciples were early followers of Jesus mentioned in the Gospel of Luke . According to Luke, the only gospel in which they appear, Jesus appointed them and sent them out in pairs on a specific mission which is detailed in the text...

. His feast is kept on 29 April.