[3] Fish Bar herself was a granddaughter of the 1000 Guineas and St Leger Stakes winner Herringbone, whose other descendants included Moon Madness, Celtic Swing and Michelozzo.
In September the colt was stepped up in class for the Group 2 National Stakes over seven furlongs at the Curragh in which he was partnered by Vincent Rossiter, a veteran jockey who was by that time mainly employed as a work-rider at Ballydoyle.
After tracking the leaders in the early stages, Glenstal made progress in the last quarter mile, went to the front inside the final furlong and won "a shade comfortably" by a length and a short head from Burslem and Lomond.
[3] On his first appearance of 1983, Glenstal was dropped back to sprint distances for a six furlong event at Phoenix Park Racecourse in April but went down by a head to Sir Prince John after what Timeform described as a "ding-dong battle".
[2] He was sent to England in June for the St James's Palace Stakes at Royal Ascot but after becoming upset in the starting stalls he never looked likely to win and came home sixth of the seven runners.