He was a chestnut horse sired by Donatello II (by Blenheim) in his last year of life.
His dam was the race winner, and Star mare, Crepuscule by Mieuxce.
Crepuscule created a British bloodstock record by producing Classic winners, Honeylight and Crepello as her first two foals.
The first was the 2,000 Guineas, followed by a victory over future star Ballymoss in the Epsom Derby.
[4] Retired to stud at his owner's Eve Stud in Woodditton, Cambridgeshire, Crepello was the leading sire in Great Britain & Ireland in 1969 and the Champion Broodmare sire in 1974. Notable progeny include: Crepello's record as sire was somewhat restricted by the fact that a number of his stock had bad legs and were untrainable.