Here's a YouTube video of the 1971 Gene Maclellan recording:

https://www.youtube.com/watch?v=oaJ8UIi1m4I

It's hard to understand a lot of it, so I don't know that I want to attempt a transcription.

You can read accounts of the "Black Donnellys" at these Websites:

• The Official Donnelly Home Page: http://www.donnellys.com/
• http://www.black-donnellys.com/the-story/
• https://en.wikipedia.org/wiki/Black_Donnellys
  [Summary: The "Black" Donnellys were an Irish family who emigrated to Ontario. Five of the family were murdered by an armed mob in the township of Biddulph in February 1880 and their farm was burned down, the culmination of long-standing conflict between the family and other residents. No one was ever convicted of the murders, despite two inconclusive trials.]

There's another song, by "Stompin' Tom" Connors: https://www.youtube.com/watch?v=EDVEK1egMVw