St Marks had reached the final stages by beating Cooley, Larne Falcons, Tamlaght and 1st Ahoghill, setting up a semi final clash with Benvarden from North Eastern Zone.
St Marks edged in front early on in the game and held on to eventually win by 8 shots.
With Cookstown Parochial beating Redeemer in the other semi final, St Marks would now face the defending champions in the final.
The final was hard fought over all 3 mats with both teams playing excellent bowls. St Marks took the lead early but with no more than 3 or 4 shots in the game, the final was far from over.
Cookstown fought back and reduced the deficit to 1 shot but St Marks held their nerve over the remaining ends and added a further 3 shots to eventually win by 4 shots.
