One of the twelve apostles, Matthew 10:3 Mark 3:18 Luke 6:14 Acts 1:13. He is named in connection with Philip, and seems to have been the same person, whom John calls Nathanael, John 1:45-51, and mentions among the other apostles, John 21:2. Nathanael may have been his real name, and Bar-tholomew, that is, son of Tolmai, his patronymic and best-known name. See APOSTLE and NATHANAEL.
These dictionary topics are from American Tract Society Bible Dictionary published in 1859. Public Domain, copy freely.
Rand, W. W. "Entry for 'BARTHOLOMEW'". "American Tract Society Bible Dictionary".