Judas Iscariot should be stated "Judas of Kerioth." Kerioth was a small town a few miles south of Hebron. He was the only one of the Twelve Apostles who was not a Galilean, but a Judean. His father's name was Simon.
Perhaps the most significant thing that can be said of Judas Iscariot, was, that, in feeling sorrow for his crime of betrayal, he did not seek to atone for his sin to the One (Jesus) whom he had wronged, but , rather, went to his accomplices in crime (the priests) and there sought to set himself aright. Because those whom he had served in his selfishness failed him at the end (the priests), he went out and hanged himself.
The apostle Matthias assumed Judas' apostolic position after Judas' suicide.
The information above is compiled from the book "The Search for the Twelve Apostles" by William Steuart McBirnie Ph.D, Copyright 1973