The stallion was born at Donoghue Arabian Horse Farm in Goliad, Texas, owned by the late Louise and Gerald Donoghue, who sold it to its owners in San Antonio who purchased it for showing by their daughter. The Donoghue's were usually reluctant to sell stallions for girls to show but the young rider was such an exceptional horsewoman they made an exception. Cass Ole's sire was Cassanova, a Donoghue Arabian, accounting for the name Cass Ole', a combination of the sire and dam's registered names.