I pulled out my SWRB collector's edition and took a look at the editor's preface and some of his notes. I then did some more searching but with little success. I was not able to find anything biographical about John M. Wilson, except that I believe he also edited
The Rural Cyclopedia, or a General Dictionary of Agriculture (Edinburgh, 1849).
I see that he is also cited by James Jordan and Ralph Allan Smith in an attempt to show that Thomas Ridgeley was a theonomist.
