Aidan O'brien On Order Of St George Ahead of the Palmerstown House Estate Irish St. Leger by Horse Racing Ireland published on 2016-09-01T17:54:53Z One of the big stars of Longines Irish Champions Weekend will be the Aidan O’Brien trained Royal Ascot Gold Cup winner Order of St George who will be warm order favourite to win the Palmerstown House Irish St.Leger at the Curragh on Sunday week. The champion trainer says Order of St George gets stronger with each passing year and he could not be happier with his preparation.