Naomh Mearnóg produced a disciplined and controlled performance when accounting for Thomas Ashe by 0-12 to 1-6 in their Dublin Minor 'C' Football Championship semi-final in St Margaret's last Sunday morning.
Their progress didn't look assured as they trailed by 1-5 to 0-3 at the interval but an inspired final quarter made the difference by the final whistle.
The hosts started in the ascendancy and a 12th minute goal from the lively Brian Shanahan handed them the early initiative, benefiting from the strong platform provided by their half-back line of Conor Howard, Stephen Sutton and Danny Cray.
Scott Shier was another to impress at midfield for Thomas Ashe and they built on their advantage through points by Dean Fox, Sutton, Darren Keogh and Shanahan.
However, despite stretching that lead in the second-half, the hosts began to concede possession to the Naomh Mearnóg midfield pairing of Ciaran Carey and Shane Nangle.
Their partnership allowed the visitors to trim their deficit and take the lead through points from Philip Rusk, Ian Garry and Chris Farrelly.
As the hosts looked to regroup in the final quarter, the Portmarnock outfit closed up shop impressively through the efforts of Cian O'Daly, Paddy Prunty, Matthew Shortall and Aodhán Fee.
"They finished strongly and probably shaded it," said Thomas Ashe manager Finbarr Shanahan.