Aramaic name means - "son of Talmai" in the sense of - "one who has many furrows; ploughman`s son; son of arable land; rich in lands".
St Bartholomew was one of the Twelve Apostles [other apostles too: Andrew brother of the Apostle Peter (the fisherman from Bethsaida, a disciple of John the Baptist), Peter (or Simon son of John, also called Cephas), John the Evangelist, James son of Zebedee, Philip of Bethsaida, Matthew the tax collector (also Levi Alpheus), Thomas, James the son, Thaddeus son of Alpheus (also known as Jacob or Judah Levi), Simon the Zealot (also Simon the Zealot) and Judas Iscariot (who betrayed Jesus)], mentioned sixth in the three Gospel lists, and seventh in the list of Acts. In the Armenian Apostolic Church he revered as its founder (Armenian Barduximeos).
He was introduced to Christ through St. Philip, where the name Nathaniel first appears. He is also mentioned as “Nathaniel of Cana in Galilee” in. The name Nathaniel is the one used for him in St. John’s Gospel. The attachment of the names Nathaniel and Bartholomew to the same person is because the other three synoptic Gospels mention the name Bartholomew right after Philip but don’t mention the name Nathaniel.