High Quality Content by WIKIPEDIA articles! Eleanor (1798 – c. 1824) was a British Thoroughbred racehorse bred by Charles Bunbury and was the first female horse to win the Epsom Derby. Eleanor also won the 1801 Epsom Oaks among many other races before retiring from racing at age eight to become a broodmare for Bunbury. She produced the stallion Muley, which in turn sired the mare Marpessa (dam of Pocahontas and grandam of Stockwell) and the influential stallion Leviathan which was exported to the United States in the early nineteenth century. Through the produce of her daughter Active (the grandam of Woodburn), Eleanor is present in the pedigrees of 19th-century American Standardbred racehorses.