The only way you're going to know for sure, because this coat of arms obviously isn't in any of the standard reference works, is to contact the College of arms in London and pay them about 60 pounds sterling an hour to do some research for you. (I went through this process myself and was happy with the results, though I couldn't afford a complete genealogical trace. I only had enough to confirm the existence of a Maydwell coat of arms. That was before I learned about the various books of Visitations).
Now, ... that's a lot of money to shell out just to confirm a coat of arms that only the armiger's direct descendants are going to be able to bear and even here cadency marks are going to come into play, etc., so a new registration will have to be made anyway and you're talking big bucks for an honorary grant from the College of Arms in London.
Nevertheless, ... from a purely genealogical point of view it would be interesting to find out. I wish we could be of more help. Keep us posted. I'll be glad to emblazon this coat of arms for you. Let me know. The link to the College of Arms website is on our Helpful Links page. Be well....