After showing promising form without winning a race as a juvenile in 1965 she developed into a top-class performer the following spring when she recorded emphatic victories in the Irish 1000 Guineas and the Epsom Oaks.

She was a granddaughter of the influential Irish broodmare Carpet Slipper (foaled 1930), whose other descendants have included Big Brown, Godiva, Golan, North Light and St Jovite.

[4] Lester Piggott took the ride when Valoris started 11/10 favourite against twelve opponents for the 188th running of the Oaks Stakes over one and a half miles at Epsom Racecourse.

Before the race O'Brien told the jockey "When you do hit the front, just be sure that you catch a good hold of her because with the crowds and the cheering she might easily start to duck around".

[2] The filly was expected to follow up in the Irish Oaks at the Curragh in July but failed to reproduce her best form on the prevailing firm ground and finished unplaced behind Merry Mate.