I found this-
Artmaster Studios
Artmaster Studios produced many paintings signed Ferrante among others (not the same as De Ferrante). I recently saw a painting on an auction site signed Ferrante which the seller represented as Mario De Ferrante, but it was not his signature. (Caveat Emptor is always the rule of eBay.)
I do not know the history of Artmaster but I do know that both Artmaster and Vanguard Studios (which by the way was started in the 60's by Lee Reynolds Burr) were both acquired by Interiors, Inc. of NY.
In the late 90's Interiors, Inc. merged the Artmaster subsidiary into the Vanguard subsidiary. The Artmaster name was dropped in lieu of Vanguard.
I do not have a list of all the artists from Artmaster, but a couple I recall are Ferrante and Huntington. As with many commercial studios, the art is decent quality.
Many of the Vanguard artists from the early days (under the tutelage of Lee Reynolds) went on to their own solo careers.
Many Vanguard pieces are signed Reynolds, but only a few of the early ones were painted by Lee Reynolds...the later paintings were painted by his students and when they were approved by him, they were then signed with his name (Reynolds).
and this-
ID of FERRANTE
Hi everyone. It's really interesting to read this thread and see how art can take on a life of it's own. I was a designer at Artmaster Studios and unfortunately (maybe?) Ferrante is a ficticious pseudonym for a designer producing that style of art. Lee, Reynolds, Huntington, Paulson, Andrew were among others. That doesn't lessen the quality of these pieces though, they were painted by incredible artists, virtuoso's in the medium, from all over the world who would reproduce paintings from an original design. Exciting times back in the late 80's, early 90's. Hope that clears up your questions.
here-
http://www.askart.com/AskART/artists/bulletin.aspx?searchtype=DISCUSS&artist=115818 
Read all the posts and you will hear (read about) a variety of different, and some similar/related (Native American) in composition, medium, and subject matter to yours all signed FERRANTE in caps..

Maybe??