Gaughan's song is about a man from Argyll who returns to Scotland having visited Ireland, is mistaken for an Irishman by a policeman, is abused and ends up killing the policeman.
It has little to do with the Row in the Town in theme, but could well share the same air at a quick glance. I haven't heard Kearney's song sung. Kearney was a lyricist who seems to have based some of his songs on airs of songs that were popular at the time. This was and is still nothing new, just a bit of healthy recycling