Dave Richardson (who wrote Calliope House) is Scottish and lives in Edinburgh. The tune sounds to me like a generic modern jig that could be from anywhere in the British Isles or maybe Canada.

There are politically nationalist motivations behind a lot of this. Claims by people in the Irish music scene for an Irish origin of innumerable tunes that started life elsewhere are often motivated by a fairly unpleasant kind of jingoism.

But for all-out bottled-in-bond gibbering paranoia, nothing I've seen comes near the arguments you get on YouTube over the national origin of the song "Sari Gelin". It's a Romeo-and-Juliet tragic love story between a Turk and an Armenian, probably written somewhere around Erzurum where Turks and Armenians lived side by side for centuries. There have been versions of it in both Turkish and Armenian as far back as anybody can trace it, and the whole point of the thing is anti-nationalistic. But every time somebody uploads a version of it, you get screaming multilingual arguments using every obscenity invented since the time of Alexander the Great with Turks, Armenians and Azeris all claiming "ownership" of it.