There is a song called "We're a' John Tamson's Bairns" words by Joseph Roy esq. Published in Songs of the British Isles (Second Series)

The chorus goes..................

Oh, we're a' John Tamson's bairns,
We're a' John Tamson's bairns,
There'll never be peace in the world again
Till we hear them singin' wi' micht and wi' main
We're a' John Tamson's bairns