I checked my American Plane Maker books and W. Hovey is not listed but there are other Hoveys that were plane makers. I believe W. Hovey would just be the maker of the iron and may be related to Hoveys that were plane makers. The other iron looked like it read G. Fallin or Pallin and then Cast Steel and warranted. There were no Fallin or Pallin listed so I may be reading the fuzzy pic wrong or that is also just the maker of the iron. Both planes are probably pre-1900 but to further date them I would need the name of the wood plane body. Absent that, I would guess somewhere between 1850 and 1900.
W. Hovey supposedly patented a plane iron on March 22, 1830 but I can find no further info , description, or image.