Some rather dull trawling reveals that this modern hymn is credited to several different people, or combinations of people, including Christopher Walker, Fintan O'Carroll and Tina English; whoever they might be. The tune, when it is even mentioned, is usually, and meaninglessly, described as "O'Carolan's Air" (sometimes spelled by romantic fantasists as "aire").

Evidently the words are recent and in copyright. The melody may be older; I did manage to find a snatch of a sound clip claiming to be "O'Carolan's Air", but it was so short and "cutesy" that it could have been any one of several tunes by, or wrongly attributed to, Carolan.

Why on earth couldn't these people have used the tune's usual name, whatever it is, rather than concealing it under a generic title?