I'm sorry, Tim, but there are no writers' credits for the EP Peelers and Prisoners. I have it in front of me and if the song did originate in Mountjoy then it was certainly not Dominic Behan. I personally doubt if even Brendan wrote it as most songs mentioned in the literary works of both Brendan and Dominic are a mixture of fragments added to fragments of traditional (i.e. no given author) material. Prime examples are The Sea Around Us and Come Join the British Army. I can only repeat that I was a confidant of Dominic for over 35 years and am still closely in touch with his wife and sons. I also had a publishing company with him. Wikipedia, by the way, is not a reliable source of information regarding the Old Triangle.