Ireland made it 13 for the week when Sir Des Champs got up late to chin Son Of Flicka on the line in the Martin Pipe Conditional Jockeys' Hurdle
It was a real family affair as the winner was trained by Willie Mullins and ridden by his son Emmet.
The 9-2 favourite was miles behind with three to jump but came with a storming late run to collar Donald McCain's charge (28-1) in the shadow of the post.
The winner carried the famous colous of Michaal O'Leary, and made it three wins at the Festival for the Ryanair boss.
Nicky Henderson's First Point (20-1) finshed third, with Indian Daudaie grabbing fourth at 25-1.
