The Northern-trained filly won the Oaks on her first appearance and finished third against colts in the St Leger Stakes at Doncaster in her only other race that year.
[1] Mary Ann had previously produced Ashton, a successful stayer in the North of England whose wins included the Richmond Gold Cup.
Oriana was ridden in the race by her trainer, Billy Peirse and despite her lack of previous experience started the 4/1 second favourite behind Lord Foley's filly Pirouette (or Peronette).
In the Claret Stakes over the two mile Ditch-In course she started at odds of 7/2 and finished second to Mr Payne's colt Crispin with Pirouette in fifth place.
[8] At the next Newmarket meeting, Oriana was beaten by Lord Oxford's six-year-old horse Poulton in a 100 Guinea match race over ten furlongs.