In 1792 "the seventeenth of the said counties be hereafter called by the name of the county of Suffolk which county is to be bounded on the east by the county of Norfolk on the south by Lake Erie until it meets the carrying place from Point au Pins into the Thames on the west by the said carrying place thence up the said River Thames until it meets the North westernmost boundary of the county of Norfolk."6
It appears that Suffolk County was abolished in 1800 in favour of Western District.
Suffolk County was located in South-Western Ontario. It was comprised of the area that is now Elgin County and part of Middlesex County.
More maps of this area
Questions & Answers
6 A Statutory Chronology of Eastern Ontario, 1788-1981 by Thomas A. Hillman