Michael 'Mouse' Morris is an Irish racehorse

Horse racing

Horse racing is an equestrian sport that has a long history. Archaeological records indicate that horse racing occurred in ancient Babylon, Syria, and Egypt. Both chariot and mounted horse racing were events in the ancient Greek Olympics by 648 BC...

 trainer

Horse trainer

In horse racing, a trainer prepares a horse for races, with responsibility for exercising it, getting it race-ready and determining which races it should enter...

 and former jockey

Jockey

A jockey is an athlete who rides horses in horse racing or steeplechase racing, primarily as a profession. The word also applies to camel riders in camel racing.-Etymology:...

.

As a jockey he rode Skymas to win the Queen Mother Champion Chase

Queen Mother Champion Chase

The Queen Mother Champion Chase is a Grade 1 National Hunt chase in Great Britain which is open to horses aged five years or older. It is run on the Old Course at Cheltenham over a distance of about 2 miles , and during its running there are twelve fences to be jumped...

 in 1976 and 1977 and Billycan to win the 1977 Irish Grand National

Irish Grand National

The Irish Grand National is a National Hunt chase in Ireland which is open to horses aged five years or older. It is run at Fairyhouse over a distance of about 3 miles and 5 furlongs , and during its running there are twenty-four fences to be jumped...

, while his most notable successes as a trainer have come with Buck House in the 1983 Supreme Novices' Hurdle

Supreme Novices' Hurdle

The Supreme Novices' Hurdle is a Grade 1 National Hunt hurdle race in Great Britain which is open to horses aged four years or older. It is run on the Old Course at Cheltenham over a distance of about 2 miles and 110 yards , and during its running there are eight hurdles to be jumped...

 and the 1986 Queen Mother Champion Chase; and War Of Attrition

War Of Attrition (horse)

War Of Attrition is a National Hunt racehorse and winner of the Cheltenham Gold Cup in 2006....

 in the 2006 Cheltenham Gold Cup

Cheltenham Gold Cup

The Cheltenham Gold Cup is a Grade 1 National Hunt chase in the United Kingdom which is open to horses aged five years or older. It is run on the New Course at Cheltenham over a distance of about 3 miles and 2½ furlongs , and during its running there are twenty-two fences to be jumped...

.

He is the son of Michael Morris, 3rd Baron Killanin

Michael Morris, 3rd Baron Killanin

Michael Morris, 3rd Baron Killanin, MBE, TD was an Irish journalist, author, sports official, the sixth president of the International Olympic Committee...

, president of the International Olympic Committee

International Olympic Committee

The International Olympic Committee is an international corporation based in Lausanne, Switzerland, created by Pierre de Coubertin on 23 June 1894 with Demetrios Vikelas as its first president...

from 1972 to 1980.