Jack's watch was given to Jack by his father Christian Shephard on the day he married Sarah. The gift had originally been given to Christian on his own wedding day by his father, Ray Shephard. Christian explained that he had never worn it himself, because on that day Jack's grandfather had told him of his disapproval of Jack's mother Margo. After Christian explained that he thought that Jack - unlike himself - made the right choice, Jack immediately put the watch on his wrist. ("The Watch")