Curtis,
Thanks for the additional picture.
Unfortunately, I couldn't find anything close in either of my references of British or American plane makers. The closest I came was a E. Cole of Bristol, England, about which no information has been discovered.Perhaps C:COLI was the owner, who might also have made the plane? Just guessing here.
The plane looks early, maybe 18th century, and the marking style fits in with that as well.
Hopefully, someone else more knowledgeable than I will have an answer.
Rick