I am one of those who think this patchbox style may be from New York. That was why I asked the poster to show pictures of the back side of the gun, so we could see the lock bolt plate, cheekpiece, etc., "just in case" they gave us a better idea of where this gun was made.
The reason I think this style box may be from New York is pretty simple... there are several known NY rifles with this box. While not common, that's about the only state where we have a couple rifles with this box and a maker's mark. Jennings of Elmira, NY, Sterling of Newburgh, NY, and Fox of NY City each made at least one gun with this box. In addition, the side leaves [with different finials] are found on a number of NY makers' guns. I did a quick scan through Bill Ivey's NC book and did not see this box, or anything close, on any of his pictured NC rifles. Jim Whisker listed Partick Hoy in both his Carolina books, hard and soft covers, but gave no image or description of what the man's guns looked like. So.... some of us tend to point first at NY, since at least we have a couple known guns from there with this box.
I have not read the "Muzzle Blasts" article by Jim Whisker on the Patrick Hoy gun, so I do not know what provenance the rifle had, or what reasoning Jim offered to attribute it to Hoy. Jim usually accepted a collector's word on an attribution of an unsigned rifle when he was heavily photographing guns years ago for his many books on various state's early firearms... and sometimes those "attributions" given to him were wishful thinking by the owners.
Of course, that doesn't mean this style patchbox wasn't used elsewhere, since gunsmiths moved around. But without a signed gun, or an attributed gun where the owner offers solid reasoning for the attribution, it's hard not to lean toward the few marked guns we know about.
Shelby Gallien