I can also remember disagreeing strongly with Bob Stewart's 1988 book Where is St. George? and found the disagreement thought-provoking.... though less stimulating than the Harker book because it was less well written.

I found my old copies of both of these recently whilst re-arranging my folk-shelves. Even took a picture for Facebook (CLICK!) with the legend : A couple of Folkin' Classics nailing the extremes from the weird to the wonderful...