The name John Howe brings back memories. I had a lady come into my store with a double barrel gun about 15 years ago.
She said it had been in her family for four generations and the fifth generation had no interest. Lucky me.
It was stamped on the top rib, "John Howe, St Johnsville, NY". I believe it was called a "cape gun", one barrel was about 28 gauge
smoothbore and the other barrel was a .38 caliber rifle with a very fast twist, probably for conical balls. It had German-silver furniture and a
nice German-silver inlay in the cheek, and back-action locks. Mechanically, it was tight and functional, hardly any use.
I sold it about ten years ago to pay county property taxes, and have been chasing it for the past five years through two subsequent owners, both past. I hope it is still in NC. It was nothing to write home about but it was tight and worth shooting a bit. There's probably a FB group that exists for folks like me that sold guns they wish they hadn't and can't find the ones they sold.