There's also this, with a card commemorating the execution with a few lines of verse: Charlie Peace (if your browser lets you view the image you can see the card clearly).

I won't hunt out any more refs; there are a lot of them!

I couldn't find a copy at the Bodleian, but the Roud index has a single entry for A New Song on the Trial and Sentence of Peace (first line Charles Peace the Blackheath burglar is sentenced now to die), to be found in Healy: Old Irish Street Ballads, 1 pp.63-65 (which I think was reissued as the The Mercier Old Irish Street Ballads)

Mick