"........but would a Scot (with some African ancestry) singing it ("The Visitor") be eligible for your "English" folk awards?" (Banjiman/citternman..?)...Yes, as I said, it's a self-penned English folk song, and, as a couple, you two abide in England now.
To Joe: I'm abiding in, rather than visiting, England, now, so I practise/perform English songs and hymns, whilst listening to others from around the world.