Regulus (horse)
Regulus (1739) was an undefeated British Thoroughbred racehorse who won eight Royal Plates in 1745. Background
He was bred in England by Lord Chedworth. Regulus was by the Godolphin Arabian, his dam, the noted Grey Robinson, by Bald Galloway and out of Sister To Old Country Wench (dam of Squirt ) by Snake, out of Old Grey Wilkes, a daughter of Old Hautboy. After the death of Lord Chedworth, Regulus was sold to Mr. Martindale as a maiden. Racing career
Regulus was a successful racehorse, winning eight Royal Plates in 1745 and a £50 plate. Regulus was superior to any horse of his time and retired unbeaten to stud in the north of England. Stud record
Regulus proved to be an excellent sire. At stud, he sired Royal (1749), South (1750), Fearnought (1755), undefeated Alipes, Star, Cato, Juba, Ascha, Grisewood's Lady Thigh, Miss Belsea, and many successful broodmares including Spilletta who is the dam of the undefeated champion Eclipse. Regulus also sired the second dam of Highflyer. His offspring's successes led him to be the Leading sire in Great Britain & Ireland for eight years (1754–1757, 1761, 1763, 1765, and 1766). He died at age 26. Sire line tree 

Regulus
Brutus
Cato
Royal
Adolphus
Silvereye
South
Confederate
Friar
South West
South East
Magog
Cormorant
Amazon
Laycock
Flimnap
Careless
Regulator
Mousetrap
Alderman
Jolly Roger
Fearnaught
Matchless
Whynot
Regulus
King Herod
Fearnought
Eclipse
Independence
Wildair
Highflier
Commutation
Chanticleer
Dragon
Vampire
Jalap
Achilles
Ascham
Star
Prophet
Soothsayer
Goldsmith
Trifle
Doge
Venetian
Young Sir Peter
Morwick Ball
Icelander
Young Morwick
Gustavus
Curanto
Parlington
Doctor Nim
No-no
Pellegrine
Turk

See also
 List of leading Thoroughbred racehorses

References

1739 racehorse births
British Champion Thoroughbred Sires
Racehorses trained in the Kingdom of Great Britain
Racehorses bred in the Kingdom of Great Britain
Undefeated racehorses
Thoroughbred family 11