Castletown Geoghegan had looked in control just moments from time.
Clonkill are Slevin Coaches Westmeath Senior Hurling champions for a record 17th time.
Pat O'Toole's side secured their third successive crown by defeating Castletown Geoghegan by 3-16 to 2-16 after extra time in Mullingar yesterday.
Castletown had been on course for victory but a goal three minutes into injury time from Jordy Smyth sent the game into extra-time.
Niall Mitchell, who was returning from a shoulder injury, also netted in extra-time to secure a three-point victory for the men in green and gold.
Clonkill captain Brendan Murtagh became the first player to ever lift the Westmeath Examiner Cup three times as skipper and he says it was a special moment:
Their manager Pat O'Toole spoke with Gerry Russell after the game:
Westmeath SHC: Ending Championship Drought On The Cards For Lough Lene Gaels
Midlands LGFA Champions Looking To Book Provincial Semi-Final Spots
Laois SFC: Consistency The Message From Portarlington Manager
Portlaoise Panthers Aiming To Return To Winning Ways
Westmeath SHC: Castletown Geoghegan And Lough Lene Gaels Set For Bank Holiday Clash
Buccaneers Travel To Wexford In AIL This Weekend
Offaly SFC: Ferbane Looking To End Six Year Championship Drought
Laois SFC: A Second Chance Awaits Courtwood
Portlaoise Panthers Looking To Continue 100% Start
Westmeath SFC: Coralstown Kinnegad Looking To End 29 Year Famine
Offaly SFC: Tullamore And Ferbane Set For Trilogy
Milltown Secure Westmeath Ladies Football Championship
Medals Secured For Midlands Boxer At European U15 Championships
Westmeath SFC: A Repeat Of 2022 The Motivation For The Down's
Westmeath Seeks Government Backing For €78m Sports Complex Plans
Offaly SHC: Shinrone Fightback Not Enough In The End
Clara Star Nominated For Player Of The Year Award
"There's Work To Be Done To Sign Players"
CCFL: Scoreless Draw Leaves Clonaslee Bottom Of Senior Division
Laois SHC: Champions Stand Up To Be Counted When It Matters Most