Mr. What

Mr. What was an Irish bred, Irish-trained Thoroughbred racehorse noted for winning the 1958 Grand National.

Mr. What
Sire	Grand Inquisitor
Grandsire	His Reverence
Dam	Duchess of Pedulas
Damsire	Duke of Buckingham
Sex	Gelding
Foaled	1950
Country	Ireland[1]
Colour	Bay
Owner	David J. Coughlan
Trainer	Tom Taaffe, Sr.
Major wins
Grand National (1958)

An eight-year-old gelding owned by David Coughlan, trained by Tom Taaffe. Mr. What was ridden by The Queen Mother's jockey Arthur Freeman who put up 6 lb (2.7 kg) overweight. Appearing ideally suited by the heavy conditions, the horse won by 30 lengths, despite stumbling at the last fence. Mr. What finished third in both the 1959 and the 1962 runnings of the National,^[2] but never won another race.^[3]