Because Secretariat had immature sperm in differing amounts, the Claiborne staff decided to test breed him. They chose an Appaloosa nurse mare named Leola. The breeding took. John and Lynn Nankivil of Winona, Minnesota, purchased Leola for an undisclosed amount of money. Before his birth, several breeders had purchased breeding rights to him, not knowing if Leola would produce a colt. On November 15, 1974, Leola produced a blanketed Appaloosa clone of his sire. First Secretary grew to an inch taller than his sire. The foaling made national news. First Secretary´s November birthday made him ineligible to race, so he was used as a stud. He sired 247 foals including 39 race starters and 33 point earners. First Secretary died in 1993 after suffering from colic.