Bartholomew
Bartholomew is one of the twelve apostles. In the UPDV he appears within the apostolic lists as a bare proper name, paired with Philip and given without patronymic, place of origin, or other descriptive detail. A long-standing reading tradition further identifies him with Nathanael of John 1, though that identification rests on association rather than on a textual claim.
In the Apostolic Lists
Within the Markan list, Bartholomew is named between Philip and Matthew: "and Andrew, and Philip, and Bartholomew, and Matthew, and Thomas, and James the [son] of Alphaeus, and Thaddaeus, and Simon the Cananaean," (Mark 3:18). The Lukan list places him just after Philip in the same pairing: "Simon, whom he also named Peter, and Andrew his brother, and James and John, and Philip and Bartholomew," (Luke 6:14). In both passages his inclusion is brief — a bare proper name, with no further description attached.
The Nathanael Identification
A traditional reading associates Bartholomew with the Nathanael of John 1, on the basis that John pairs Nathanael with Philip in the same way the synoptic lists pair Bartholomew with Philip. The text of John 1 does not itself assert this identity; it surfaces only when the lists are read alongside John's account. In that account Nathanael, brought to Jesus by Philip, is told: "Nathaniel says to him, From where do you know me? Jesus answered and said to him, Before Philip called you, when you were under the fig tree, I saw you." (John 1:48). On the traditional reading, this exchange is the closest the Gospels come to a personal encounter for Bartholomew — an introduction in which Jesus' prior, unobserved knowledge of the man precedes the man's own approach.