|Country||United Kingdom of Great Britain and Ireland|
|Breeder||Robert Crewe-Milnes, 1st Marquess of Crewe|
|Owner||Earl of Crewe|
|Trainer||1) John Porter|
|Criterion Stakes (1904)|
Richmond Stakes (1904)
Duke of York Stakes (1905)
Duke of York Handicap (1906)
Cambridgeshire Handicap (1906)
Champion Stakes (1906)
Princess of Wales's Stakes (1907)
|Leading sire in Great Britain and Ireland|
(1914, 1915, 1916, 1920, 1921)
|Last updated on May 6, 2010|
Polymelus (1902–1924) was a British Thoroughbred racehorse who was the leading sire of racehorses in Great Britain and Ireland for five years (1914, 1915, 1916, 1920, 1921). Among his most famous descendants are Secretariat and Northern Dancer. However, it was through his son Phalaris that he will forever be remembered. His great grandsire was Bend Or.
Polymelus was a bay horse bred by Lord Crewe. He was sired by Cyllene, an Ascot Gold Cup winner, who went on to become a highly successful stallion. In addition to Polymelus, he sired The Derby winners Cicero, Minoru, Tagalie and Lemberg and was champion sire in 1909 and 1910.
Polymelus's dam Maid Marian was a half-sister to the outstanding racemare La Fleche and later became an influential broodmare in her own right, being the foundation mare of Thoroughbred family 3-f. Her other descendants have included Big Red Mike, Mioland, Mont Tremblant, Pont l'Eveque, Right Royal and Saint Estephe.
In 1906 Polymelus was offered for sale at Newmarket and bought for 4,200 Guinea by Solomon Joel. The colt reached his peak later that year when he recorded victories in the Duke of York Handicap, Cambridgeshire Handicap and Champion Stakes. He added a win in the Princess of Wales's Stakes in 1907 before being retired to stud.
- Black Jester, won the 1914 St Leger Stakes
- Pommern, the 1915 English Triple Crown champion
- Fifinella, won 1916 Epsom Oaks and Epsom Derby
- Humorist, won 1921 Epsom Derby
- Phalaris, Leading sire in Great Britain & Ireland (1925, 1928) and Leading broodmare sire in Great Britain & Ireland (1937, 1941, 1942)
- Parth won the 1923 Prix de l'Arc de Triomphe
|Bona Vista (GB)
Maid Marian (GB)
|Young Melbourne mare||Young Melbourne|
|Brown Bess (Family 3-f)|
- Details on page 44 in Designing Speed in the Racehorse by Ken McLean (2005) ISBN 978-0-929346-80-9
- "Polymelus pedigree". Equineline.
- "Maid Marian – Family 3-f". Thoroughbred Bloodlines.
- "Doncaster St Leger". The Star (Christchurch). 14 September 1905.
- Mortimer, Roger; Onslow, Richard; Willett, Peter (1978). Biographical Encyclopedia of British Flat Racing. Macdonald and Jane’s. ISBN 0-354-08536-0.
- "Phalaris". Thoroughbred Heritage.
- "'Picture This #14′ Polymelus, Museum of Zoology". Cambridge University Museum of Zoology. 1 February 2012.