The partnership between them was not formed, it is believed, till about the year 1829-30. The two men were at all events intimately associated in the winning of the Derby of 1832 by St. Giles, and the winning of the St. Leger of the same year by Margrave. Curious tales have been told regarding the victory of St. Giles; twenty-two horses contested the race, in which Margrave (winner of the St. Leger) was a competitor, whilst Ridsdale also had a colt running in the race; but St. Giles, which started first favourite, won very easily. The winner was bred by Ridsdale at Merton, his place at York, and it was whispered at the time that the horse was a year older than it should have been as a Derby winner; in other words, that it was four, instead of three years old. But, to use the words of an outspoken turfite, "That would have been nothing for such men to do: Ridsdale could have managed such a bit of turf business easily, being a perfect master of the art of racing roguery." No objection was, however, made to St. Giles on the ground of fraud, but a caveat was lodged on the ground of wrongful description in the entering of the horse for the race, which in the Derby and some other classic events, as is well known, takes place when the colt is a yearling. On the case of misdescription being referred for decision to three gentlemen of turf celebrity and honour, their verdict was given in favour of Ridsdale; it was in the name of the latter that the horse had been entered for the Derby. Extraordinary revelations have occasionally been made of the amounts won by the confederates by means of St. Giles' victory; both of them, it is certain, were large gainers by the success of their horse, in favour of which the "oracle" is stated to have been so industriously "worked" that not more than three of the horses running in that year's Derby were really trying to win; the horse placed third was Trustee, the property of Ridsdale; Margrave, the fourth in the struggle, belonged to Gully, and afterwards won the St. Leger. The winnings of the partners on the Derby were at one time computed at £100,000, £40,000 being Ridsdale's share, the rest falling to Gully. Some aver that the partners quarrelled over the division of the spoil, but that was not the case, as the partnership certainly lasted till after the Doncaster meeting.