Mary Christiana Reveley (née Allison, 22 September 1940 – 30 October 2017) was an English racehorse trainer.
She was born on 22 September 1940 to Harry Allison, a farmer, at Groundhill Farm, Lingdale, Yorkshire, where she lived and trained throughout her life.
She trained from Groundhill Farm except for a short period in 1989-90, when she was based at Whitewall Cottages, Malton, North Yorkshire.
Her last winner was Spitting Image at Redcar on 8 August 2004, after which her son Keith took over the yard, now numbering 60 horses, although she continued to be involved in point-to-point racing.
"[2] According to racing journalist Cornelius Lysaght she seemed "a quiet, homely character, like your friend's lovely mother, but outward appearances clearly belied a steely inward resolve".
[1] Mary married George Reveley in 1960, and had two sons - Keith, who was her assistant and took over the training licence in 2004, and John.