I've just been adding these on to Etsy and I've been looking for a little information about them. As someone who also trod the boards (a number of years ago now), I feel I should pay a little homage to these four.
1 - Mr Mathews as Monsieur Morbleu - theatre manager and comic actor, Charles Mathews (1776-1835) was Monsieur Morbleu in the farce Monsieur Tonson by W.T. Moncrieff, early nineteenth century.
2 - Mr John Reeve as Sylvester Daggerwood. This was a one-act play by George Colman, first performed in 1795.
3 - Mr Collins as Master Slender in Merry Wives of Windsor.
4 - Mr Incledon as Steady in "The Quaker", copper engraving. Charles Incledon was a celebrated singer and actor in the late 18th and early 19th century. (Thank you, Wikipedia)
Find them here.