1839: three-year-old season In early 1839 Lord Chesterfield, withdrew the horses he owned from Ridsdale's stable and claimed Bloomsbury as his property. The dispute looked likely to result in Bloomsbury's entry for the Derby being declared void, but the matter was resolved when it was agreed that Chesterfield should be paid compensation for all Bloomsbury's entry fees and forfeits. The money was believed to come from Harry Hill, a
bookmaker who stood to win a great deal of money if Bloomsbury won the Derby. Questions about the true identity of Bloomsbury were raised immediately after the Derby. Deception's owner, Fulwar Craven, lodged an official objection, claiming that Bloomsbury's pedigree had been inaccurately recorded. The colt had been registered by
Weatherbys in the
General Stud Book as having been sired "by Mulatto or Tramp", implying that his dam had been "covered" by both stallions in the year of his conception, but when entered for the Derby he was recorded as being simply "by Mulatto". The objection was not sustained by the stewards who felt that there was insufficient evidence. Craven was unwilling to accept the decision, claiming that he had been given insufficient time to prepare his case and announced his intention of taking legal action. The gambling community was left in a state of confusion, with
bookmakers refusing to pay out on "winning" bets. Bloomsbury was then sent to
Royal Ascot where he ran twice. On 4 June he ran in the Ascot Derby, a race now known as the
King Edward VII Stakes. Despite carrying a five
pound weight penalty as a result of his Derby win, he started 1/5 favourite and won by a length from the
2000 Guineas winner
The Corsair. Two days later at the same meeting he won a £200
Sweepstakes, beating his only rival, an unnamed "sister to Hector", who reportedly had only been entered in the hope that Bloomsbury would be declared ineligible to run because of his questionable pedigree. The information given to the compilers of the Stud Book on the other hand, was shown to have been inadequately sourced, relying on the word of a local racing official named Orton rather than Weatherbys staff. Future editions of the Stud Book removed the reference to Tramp. In September, Bloomsbury was sent to
Doncaster for the
Great St Leger. He looked much less impressive than he had in summer, appearing underweight and suffering from a cracked heel.
1840: four-year-old season Bloomsbury's first start as a four-year-old came at Royal Ascot in June, when he ran in the
Ascot Gold Cup, starting the 7/2 second favourite. According to press reports, Bloomsbury's jockey was unable to restrain him and he took the lead from the start. He was overtaken in the straight and finished third of the eight runners behind St. Francis. In July at
Liverpool Bloomsbury started odds-on favourite and recorded his first win for over a year by beating an unnamed three-year-old filly by Lamplighter at
weight-for-age in the one and a quarter mile Croxteth Stakes. At Newmarket in October, Bloomsbury carried top weight of 126
pounds in the second running of the
Cesarewitch Handicap. Ridden by
Sam Chifney, Bloomsbury was produced with a strong run at the end of the two and a quarter mile race, but hung away from Chifney's whip, and in a very rough and close finish, he was beaten by a neck into second place by Clarion.
1841: five-year-old season On his first start as a five-year-old, Bloomsbury returned to Royal Ascot for a second attempt at the Gold Cup on 3 June. On this occasion he finished fifth of the six runners behind Lanercost. Bloomsbury's final race came at Liverpool on 14 July when he ran in the Croxteth Stakes. He disputed the lead from the start with the four-year-old Doctor Caius, and after a "severely contested" race finished second by a neck. ==Assessment==