Another question, are these pretty much post-1850 originals? Most I have seen are not early 19th century, although that may depend on whether flint or cap...
SSE
If we take the five guns left too right all are by provincial makers
No1
S/B by Stephens a family gun making business who were in business from 1800-1855 at Bristol Gloucestershire
No 2
Brookes a family business from Bristol Cloucestershire 1834-1856
No 3
David Nixon from Newark Nottingshire 1829 to1868
No4
This gun has no name and could have been retailed by a ironmonger dated 1834 to1850
No 5
Maybury this name is not recorded dated 1830 to 1850
Feltwad
A Flint Lock will not secure a chicken house door