|Regulus is a thoroughbred racehorse out of Grey Robinson by Godolphin Arabian. He was born around 1739 in Great Britain, and was bred by Lord Chedworth.|
|Horse (Equus ferus caballus)|
|Last updated on August 22, 2007|
Regulus was an undefeated Thoroughbred racehorse stallion foaled in 1739. He was bred in England by Lord Chedworth.
Regulus was by the Godolphin Arabian, his dam, the noted Grey Robinson, by the Bald Galloway, 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 while he was still a maiden horse. He was very good racehorse, winning 8 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 where he proved to be an excellent sire. At stud, he sired Royal (1749), South (b. 1750), Fearnought (1755) (exported to the US), Star, Cato, Juba, Ascha, Grisewood's Lady Thigh, Miss Belsea, and many important broodmares, including Spilletta (dam of 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 and 1765-1766).
He died at age 26.
- List of Undefeated horses