Nearly three years have gone by and there are still only about 30 google references, but I did find this in a piece about the Trend Showband.

One of these Singles was the ballad "Rose OF moray" penned by Malin man, John Donovan

http://www.iangallagher.com/johnbairdTrend.html

Apparently the music of John Donovan is still talked about in Malin Head but I couldn't find anything too definite about him.