Harold Boulton wrote the song in English, set to a traditional tune called My Wife is Sick. Claims as to the venerable age of the song Castle of Dromore, then, are wishful thinking; especially those based on the occurrence of "Dromore" in the title!

This revived thread contains little information compared to a later one, Help: Castle of Dromore; origins and location, which among other things, contains the Irish Gaelic text as translated into that language from Boulton's song by Douglas Hyde.