Evidently "The Coal-Owner" appeared - as a poem only - in an old paper and Lloyd added a tune of his own.

Folksong? Or what?

Unless content is to be thought of as a defining element, my judgment is that the song is no more than forgotten ephemeral verses, in a popular style, set to music by a researcher generations later.

Its inherent relationship to "traditional song" would thus seem to be stylistic only.