St. Leger family of Lt. Col. (later Major-General) Anthony St. Leger, and ran for the first time over a two-mile course on Cantley Common in Doncaster. The classic race, The St. Leger, has been run at Doncaster ever since. Most St. Legers in the UK today descend from Sir Anthony St. Leger, KG of Ulcombe, Kent. The Viscounts Doneraile, whose seat was at Doneraile, Co. Cork, in Ireland, descend from Sir Anthony's first son, William, and the Heywards Hill branch of the family, also originally of Co. Cork, descend from his second son, Warham. (The account given in the "Peerage of Ireland" by
American St. Leger Stakes American St. Leger Stakes The American St. Leger Stakes is a Grade 3 flat horse race in the United States for thoroughbreds three-year-old and older. It is run over a distance of . Held annually in mid August, it is held on the same racecard as the Arlington Million, Beverly D. Stakes and Secretariat Stakes and on the same turf course at Arlington Park, Arlington Heights, Illinois. The race was upgraded to Grade 3 status in 2015. It was dropped from Arlington Park's calendar in 2018 with no immediate indication of whether it would be returning in any future year.