Hi DebbieG,
Thank you very much for this information. No, I had not seen this will, although I did recently discover another document suggesting that Martin Farnell became bankrupt in the early 1800's. It seems as though some information has come online fairly recently. This might be his will, since his daughter married Thomas Rochford from Sutton Coldfield, so he might have moved there also.
Can you tell me where you found the record for the death of Martin Farnell in Clifton Campville in 1823? Perhaps there were two Martin Farnell's? Family sources indicate that "my" Martin Farnell died around 1815, which seems to tie in with this will. I have so far found very little information on him, so it is very difficult to tell. I only know that he was some kind of squire and, therefore, assumed that it must have been him that was the high sheriff, but if there were two Martin Farnell's, that would make it more complicated.
Thank you very much for your help. I do not have the greatest experience in these matters!
Alan