(from the http://www.bibleinfo.com/en/questions/who-were-twelve-disciples webpage)
Batholomew Nathanael, son of Talmai, lived in Cana of Galilee.
Tradition says he was a missionary in Armenia. A number of scholars believe that he was the only disciple who came from royal blood, or noble birth. His name means Son of Tolmai or Talmai(2 Samuel 3:3). Talmai was king of Geshur whose daughter, Maacah, was the wife of David, mother of Absolom.
Bartholomew's name appears with every list of the disciples (Matthew 10:3; Mark 3:18; Luke 6:14; Acts 1:13). This was not a first name, however; it was his second name. His first name probably was Nathanael, whom Jesus called "An Israelite indeed, in whom there is no guile" (John 1:47).
The New Testament gives us very little information about him. Tradition indicates he was a great searcher of the Scripture and a scholar in the law and the prophets. He developed into a man of complete surrender to the Carpenter of Nazareth, and one of the Church's most adventurous missionaries. He is said to have preached with Philip in Phrygia and Hierapolis; also in Armenia. The Armenian Church claims him as its founder and martyr. However, tradition says that he preached in India, and his death seems to have taken place there. He died as a martyr for his Lord. He was flayed alive with knives.
His apostolic symbol is three parallel knives.