Bartholomew is listed in the New Testament among the Twelve Apostles of Jesus in the three Synoptic Gospels: Matthew, Mark, and Luke, and in Acts of the Apostles.
Eusebius of Caesarea's Ecclesiastical History (5:10) states that after the Ascension, Bartholomew went on a missionary tour to India, where he left behind a copy of the Gospel of Matthew. Tradition narrates that he served as a missionary in Mesopotamia and Parthia, as well as Lycaonia and Ethiopia in other accounts. Popular traditions say that Bartholomew preached the Gospel in India and then went to Greater Armenia.
–Wikipedia