Brownhylda was a British Thoroughbred racehorse and broodmare. She showed considerable promise as a two-year-old when she won three times and finished twice on two occasions. In the following year he won the Epsom Oaks and the Park Hill Stakes as well as finishing second in the Yorkshire Oaks. Her form declined thereafter and she failed to win again before being retired at the end of the following year. She produced only four known foals, but these did include the St Leger winner Firdaussi.
As a two-year-old, Brownhylda won three of her seven races namely the Prince of Wales's Nursery at Doncaster, the Autumn Foal Stakes and the November Nursery at Newbury. She also finished second to the Coventry Stakes winner Drake in the Hurstbourne Stakes in July, and to the colt Twelve Pointer in the International Two-year-old Stakes at Kempton Park Racecourse.
1923: three-year-old season
In April 1923, Brownhylda finished unplaced behind Lord Derby's filly Tranquil in the Berkshire Handicap at Newbury. On 8 of June Brownhylda started at odds of 10/1 in a twelve-runner field for the 145th running of the Oaks Stakes over one and a half miles at Epsom Racecourse. The overwhelming favourite for the race was Tranquil, who had won the 1,000 Guineas over one mile at Newmarket. Ridden by Vic Smyth, Brownhylda tracked the leader before going to the front a furlong out and won in a closely contested finish, beating Shrove by a neck with the Aga Khan's Teresina a head away in third. Tranquil finished fourth having been unable to obtain a clear run in the straight. The filly's winning time of 2:37.0 was a second faster than the one recorded by Papyrus in winning the Derby two days earlier. In August Brownhylda contested the Yorkshire Oaks at York Racecourse and finished second to Lord Astor's filly Splendid Jay. In September the filly was moved up in distance for the Park Hill Stakes at Doncaster. With Smyth again in the saddle she started favourite and won from Concertina. In autumn she finished second to the Queen's Vase winner Puttenden in the Lowther Stakes at Newmarket Racecourse, and ran unplaced in the Liverpool Autumn Cup. At the end of the year Brownhylda was put up for auction at Newmarket but failed to meet her reserve price when the bidding stopped at 5,500 guineas. The Sporting Chronicle commented that she looked "leggy" and unimpressive in the sales-ring.
1924: four-year-old season
Brownhylda remained in training as a four-year-old but made little impact on the track. She finished unplaced the City and Suburban Handicap at Epsom in April and the Jubilee Handicap at Kempton in May. In the following month she slipped and fell approaching the final turn in the Ascot Stakes. Towards the end of the season she finished unplaced under a weight of 116 pounds in the Newbury Autumn Cup. At the end of the year, Brownhylda returned to the sales-ring at Newmarket and was bought for 5,100 guineas by representatives of the Aga Khan.
Assessment and honours
In their book, A Century of Champions, based on the Timeform rating system, John Randall and Tony Morris rated Brownhylda an "inferior" winner of the Oaks.
Breeding record
At the end of her racing career Brownhylda became a broodmare for the Aga Khan's stud. She produced at least four foals and one notable winner:
Witch's Cauldron, a chestnut filly, foaled in 1926, sired by Pot Au Feu. Dam of Longthanh
