I think we should trust Dick Wolff as to the name as he introduced the tree and his catalog listed 'Hubbs Red Willow'. Also, one of the forum members here purchased directly from Wolff's Red Maple Nursery with the tree labeled 'Hubbs Red Willow' not Hubb's or Hupp's. Seems Mr. Maple and Peter Gregory are questionable in their naming. A copy of the catalog is on the forum as well as relevant posts in a couple locations.