Enjoyed this, Jim. I remember reading about Urtain in The Ring or Boxing Illustrated back around 1970 or so. He was Basque, if I recall correctly, same as Paolino Uzcudun. Urtain gained great physical strength from hoisting rocks, something which I think Primo Carnera did as well. As you noted, Jim, he had the strength and the punch but not the polish. Plus, he came along at a time when there were many top flight heavyweights.
Mike D.