Emilius

Emilius
Emilius with a groom. Painting by William Tasker.
Sire	Orville
Grandsire	Beningbrough
Dam	Emily
Damsire	Stamford
Sex	Stallion
Foaled	1820
Country	United Kingdom of Great Britain and Ireland
Colour	Bay
Breeder	John Udney
Owner	John Udney
Trainer	Robert Robson
Record	10:7-2-0
Major wins
Riddlesworth Stakes (1823) Epsom Derby (1823) Grand Duke Michael Stakes (1823)
Honours
Leading sire in Great Britain and Ireland (1830, 1831)

Emilius (1820–1847) was a British Thoroughbred racehorse and sire. In a career that lasted from April 1823 to October 1824 he ran ten times and won seven races, including a walkover. As a three-year-old in 1823 he was undefeated in six starts, including the Derby. After a less impressive year in 1824 he was retired to stud and became a highly successful and important breeding stallion.

Emilius was a "muscular, compact"bay horse with a white star bred by his owner, Colonel John Udney. The colt was sent into training with Robert Robson, known as the "Emperor of Trainers" who produced the winners of thirty-four Classic races from his base at Newmarket, Suffolk. Emilius was ridden in all his races by the veteran Frank Buckle, who was fifty-seven years old at the time of the colt's greatest successes.

Emilius was sired by Orville, a successful staying racehorse who excelled over extreme distances. At stud he was Champion sire in 1817 and 1822 and sired the Classic winners Octavius (Derby), Charlotte (1000 Guineas), Zoe (1000 Guineas) and Ebor (St Leger).

Emilius did not run as a two-year-old, but his performances on the Newmarket training gallops were enough for him to be regarded as one of the leading colts of his generation. By March 1823, still unraced, he was disputing the position of favourite for the Derby in the betting lists.

Emilius began his racing career at the Craven meeting at Newmarket on 14 April when he started 5/4 favourite for the Riddlesworth Stakes, a race which at the time had a prestige equal to the Classics and more prize money than the Derby. He won the 2,400 guinea prize, beating Talisman, from whom he was receiving three pounds. He then collected a further 1,500 guineas for his owner three days later without having to race as his rivals were withdrawn from the Dinner Stakes, and he was allowed to walk over to claim the prize. At the next Newmarket meeting he bypassed the 2000 Guineas to run in a Sweepstakes. When four of his opponents withdrew, Colonel Udney agreed to divide the prize money with Lord Exeter, the owner of Emilius's only remaining rival.