You don't cite any source for those fragmentary texts. Where are they from, and how do you know that they belong to the 1790s?

The OED is not a universal slang dictionary, so don't expect too much in that line from it. You would probably find the Oxford Dialect Dictionary more helpful, though I don't think that it's available on CDROM; you would probably have to go to a library.

This thread might be shorter and easier to follow if you quoted earlier posts less and concentrated on answering, and asking, questions succinctly and unambiguously.