John Costigan, who was games master at the school for many years, believes victory over Ard Scoil Ris means that people will have a new set of heroes to join the winning team of 1978.
The match against the Limerick school, who will be playing in their fourth final in seven years, takes place at McDonagh Park in Nenagh at 2 o'clock.
Costigan is optimistic that the current Our Lady's line-up can bring the cup to Templemore.
