Steeleye Span had a bunch; what I can think of this sec is the ballad of the three poachers -- they shot two keepers on the way out of the wood "Exile and transportation two brothers they were taken and the other one hung as a token, may God forgive their crimes.'
I wrote one a long time ago for fun called "Billy Hardesty" after a local mass killer (killed his parents, his dog and a neighbor before wandering into town and had a shootout with police that left him wounded.) We used to get letters occasionally from him from prison.
Twa Corbies/Three Ravens (depending on the version) could work. (O'er his white bones as they lie bare the wind will blow forever more...)