Sorry for my snide comment.
I found this page useful
http://www.sportingchronicle.com/epsomderby.html
It has a table with the following columns
Year Name Statistics Sire - Dam
1780 Diomed ch. c. 1777 Florizel - Sister to Juno
...
1801 Eleanor b. f. 1798 Whiskey - Young Giantess
...
In the 3rd, "statistics" column, I am not sure what "b." and "br." mean, but "c." and "f." clearly mean "colt" and "filly".