Irish horse jockey who won the 2006 Grand National steeplechase on the racehorse Numbersixvalverde, and won the 2006 Christmas Hurdle.
He came from a horse racing-obsessed family and was raised around horses.
His nickname is Slippers.
His father, also named Niall Madden, was a jockey who had the nickname Boots.
He and Kieren Fallon are both prominent Irish horse jockeys.