St Patrick was a chestnut horse with a white star and snip, bred by his owner Sir Edward Smith-Dodsworth.

[3] After a break of four and a half months, St Patrick reappeared at York Racecourse on 24 August when he contested a sweepstakes over ten furlongs and "won cleverly"[4] from Lady of the Vale and Fitz-Teazle.

Henry Pierce's grey colt Arbutus started favourite at odds of 9/2 with St Patrick the second choice in the betting at 7/1.

Dunsinane set a fast early pace and led into the straight but Johnson produced St Patrick with a strong run to take the lead a furlong from the finish and win "in a canter" from Copeland, Locksley and Lady of the Vale.

[10] St Patrick began his stud career at Mr Hood's Grantham Arms in Boroughbridge at a fee of ten guineas,[11] before moving to Thornton Watlas, near Bedale in 1827.