The Nathanael reference article from the English Wikipedia on 24-Apr-2004
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Nathanael

In the New Testament, Nathanael is a Galilean called by Jesus Christ to be a disciple, see John 1:45-50 and 21:2. Most authorities regard him as the same man who is called Bartholomew in Acts 1:13 and in the Synoptic Gospels. See Bar.

Nathanael means God has given.