The Athlone club claimed their fifth win of the season.
St Peter's kept their winning form to keep their place at the top of the Combined Counties Football League Senior Division.
They ran out 2-1 winners away to Temple Villa, elsewhere, it was honours even between Clara Town and Monksland United at 2-2.
Coolraine are just three points off St Peter's after a 2-0 victory over Clonaslee United.
And Mullingar Athletic and Willow Park played out a 1-1 draw.

In the Combined Counties Cup 1st round, it finished: Portlaoise Ramblers 3 Holywood 1, Gracefield United 3 Melville United 0, Abbeyleix Athletic 0 Killavilla United 1.
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