Pelisse was a brown mare bred by Augustus FitzRoy, 3rd Duke of Grafton at his stud at Euston Hall in Suffolk.
Two days later she claimed a 200 guinea match against Lord Egremont's Precipitate filly when the Oaks runner-up failed to appear for the race.
On the following day Pelisse ended her season with a victory when she successfully conceded weight to the colts Brainworm and Watery in a ten furlong Sweepstakes.
[7] In April 1805 Pelisse began her second season by winning a 100 guinea match against Mr Ladbroke's colt Bustard over ten furlongs at Newmarket.
At the First October meeting, which actually began on 29 September, Pelisse was beaten by Lord Foley's colt Hippocampus in a 200 guinea match on the opening day and then finished third of the five runners behind Lady Brough in a two mile Subscription race.
Two weeks later at the Second October meeting she was beaten in a ten furlong match race in which failed to concede sixteen pounds to a three-year-old colt named Newmarket.
Two weeks later she sustained her sixth consecutive defeat when she lost a match against a three-year-old filly named Pipylina, but then won her next five races.
On 6 May at Newmarket, running in the ownership of General Gower she beat Charles Bunbury's filly Lydia in a five furlong Sweepstakes and then successfully conceded 27 pounds to a three-year-old colt in a match over the same course and distance.
Later that afternoon she appeared in a two mile handicap race in which her eight opponents included Parasol (her sister), Bustard and the St Leger winner Staveley.
She finished third to Juniper (later a successful stallion) in a two mile Sweepstakes, and then collected a 50 guinea forfeit when Mr Shakespear's Zodiac failed to appear for a five furlong match.
[13] Twelve days later she won two more matches, beating the 1808 Oaks winner Morel over two miles and the Duke of Grafton's filly Miltonia over five furlongs.