Ballabriggs! :)
Comment: Yes, that was in 2011 when that answer was written. There have been over a hundred and fifty winners in the history of this race.
He won the Aintree Grand National in 2000 and the Irish Grand National in 2000. In 2004 he won the Welsh Grand National. In 2005 he won the Aintree Grand National and the Irish Grand National. So he was won 5 Grand Nationals in total, having won 2 Aintree Grand Nationals, 2 Irish Grand Nationals and 1 Welsh Grand National.
HedgeHunter won the grand national in 2007
Twice
Another interesting Welsh National fact from the past was that Earth Summit's 1987 Welsh National was the first horse to win the Welsh, Scottish and English Grand Nationals.
the horse who won the grand national was ballabriggs
Brian Ffletcher in 1973and 1974 and Tommy Stack in 1977
Nijinsky never won the Grand National.
Foinavon won the Grand National in 1967.
Numbersixvalverde won the 2005 Irish Grand National and the 2006 Aintree Grand National.
He won his third Aintree Grand National in 1977. As he also won the Scottish Grand National in 1974, the third of all of his Grand National wins was the Aintree Grand National in 1976.
Oxo
Don't Push It , in the 2010 Grand National.