The use of Urchin for Hurcheon would lead one to suspect that the printers hack composing the broadside had overheard the song being sung on at least one occasion prior to making the version given, this makes one wonder how many other broadsides originated in anonymous folk productions.
I can think of at least one other--Hanna Le Gordon and am sure that a trawl of the song/ballad books would provide further examples of this practice.