Racing Hall of Fame inductee Bold Ruler who was a multiple National Champion including the 1957 American Horse of the Year.
The dam of Queen Empress and King Emperor was the Wheatley Stable's good runner Irish Jay whose wins included the Acorn, Comely, Demoiselle, and Spinaway Stakes.
[9] In 1966, Queen Empress returned to form under the care of Edward Neloy, another future Hall of Famer who took over that year as Wheatley Stable's head trainer.
As well, she ran second in both the New Castle Stakes at Delaware Park Racetrack and the Barbara Fritchie Handicap at Maryland's Bowie Race Track.
[12] Retired to broodmare duty for her owner, Queen Empress produced seven winners, the best of which was her 1978 Graustark foal Hail Emperor that won the 1983 Native Dancer Handicap.