Darley Arabian
Don't Forget Me was a dark-coated bay horse with no white markings bred in Ireland. He was sired by Ahonoora, whose other offspring included The Derby winner Dr Devious. Ahonoora was a representative of the Byerley Turk sire line, unlike more than 95% of modern thoroughbreds, who descend directly from the Darley Arabian. Don't Forget Me's dam African Doll was a great-granddaughter of Circassia, an influential broodmare whose other descendants included Desert King and Frankel.