Lewtrenchard is where Sabine Baring-Gould was the Vicar.
I've just looked in his 'Songs of the West' and he has:
No 82 page 168
'But the men of North Lew....'
In the notes it says 'Words and air from William George Kerswell, Two Bridges, Dartmoor; sung also by James Down, blacksmith, Broadwood Widger.
Robyn