Rule The World is Grand National hero at Aintree

But he was pipped by the Michael O'Leary-owned Rule The World, who stormed back to win by six lengths to give trainer Morris, whose son died while travelling in Argentina, his first Grand National win.

But it was David's National win that was the latest triumph in the Mullins dynasty.

The horse came in with odds at 50-1 offered by some bookmakers.

Steadily working his way through the field, the 33-1 shot was sitting a close third as The Last Samuri and Vics Canvas jumped the last together.

"We got help from somewhere", Morris said in a TV interview aired on RTE after the race.

"It's unbelievable. I couldn't expect things to have gone any better, it all went to plan", he told Channel Four.

But it was David, who doesn't reach his 20th birthday until June, who was firmly in the spotlight after a superb ride aboard the gutsy Mouse Morris-trained Rule The World. "This is Disneyland, fairy-tale stuff".

Many Clouds, the 2015 victor, started as the joint-favorite with The Last Samuri and led after 17 fences, raising the chances of jockey Leighton Aspell winning an unprecedented third straight Grand National.

There has been a Mullins in the winner's enclosure for much of the three days of the Crabbie's Grand National Festival.

Mullins is the nephew of leading Irish trainer Willie Mullins, and the grandson of Paddy Mullins, who is best known for training the great mare Dawn Run to a victory in the Cheltenham Gold Cup in 1986. He ended up trailing home last of the finishers.

And Mullins recalled watching Niall "Slippers" Madden similarly win on his first ride in the race aboard Numbersixvalverde 10 years ago.

Kim Bailey, trainer of second-placed The Last Samuri, said: "I hate being second, I can't even explain the feeling".

All the horses have been reported as safe and sound, despite only 16 making it to the finish.

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