The O'Dempsey's were beaten with minimum fuss by the now three-time county champions.
Portarlington were being crowned county champions for a third year in a row.
Playing with a strong wind in the first half proved valuable, a half time score of 13 point to 2 left O'Dempsey's under sever pressure starting the second.
A red card to Robbie Kehoe for a slap sealed O'Dempsey's fate.
In a first meeting between these parish neighbours in a county final, Portarlington will hold the bragging rights for the next year at least.
Speaking to Pat O'Sullivan after the game Port's manager Martin Murphy says he was confident in his team:
NHL: Offaly Face Limerick In Final League Game
Portlaoise Panthers Looking To Continue Good Form In Division One
Shane Lowry In Action In Florida This Week
NHL: Improving Each Week The Goal For Laois
Grainne Walsh Progresses At Strandja Memorial Tournament
Crunch Weekend For Midlands Sides In National Camogie League
James Gormley Named On Irish Squad For FIBA EuroBasket Qualifiers
Portlaoise Panthers Suffer Tough Defeat In Super League
CCFL: St Peter's Extend Their Advantage At Top Of Premier Division
NFL: Relegation Firmly On The Cards For Offaly
Laois "Devastated" By Defeat Despite Delivering "Manliness" - Justin McNulty
Westmeath Ladies Bag First Win Of League Season
Big Camogie Wins for Westmeath and Laois Over The Weekend
Fitzgerald "Relieved" After Squeaking Past Kerry
NHL: Galway Prove Too Strong For Offaly
Former Laois And Offaly GAA Manager Honoured By An Garda Síochána
Athlone Town Make It Two Wins From Two In First Division
Lee Fitzpatrick Scores Try For Ireland U20s In England
NFL: Westmeath Move Closer To Promotion
Shane Lowry Finishes Strong In California