The legendary King Edgar of Britain travels throughout his land, accompanied by a fellow named Honesty who reveals the knavery of the four sons of the corrupt, then deceased Bailiff of Hexham: a farmer, a courtier, a cony-catcher, and a priest.
When Cony-catcher is revealed to be a knave, it is in a kind of skit directed by Honesty.
The Courtier brother is brought in on the plot as well--disguised as the Judge who will adjudicate the dispute between the two "farmers." Cony-catcher swears as he's been paid to and, in the end, is confronted with the King's wrath.
(16.) On this point see Angela Hurworth, "Gulls, Cony-Catchers
and Cozeners: Twelfth Night and the Elizabethan Underworld," Shakespeare Survey 52 (1999): 120-32.
What was this supremely talented playwright doing consorting with cony-catchers
In black leather jackets and greased-back hair, the cony-catchers
of Coney Island added to the aura of innocent fun; and the "three umpires in the matter" of Falstaff's deer poaching officiated at an opening game of stickball.
Dekker, for instance, did much of his writing in prison and could see the culture of cony-catchers
through the eyes of the punished.