High Quality Content by WIKIPEDIA articles! High Quality Content by WIKIPEDIA articles! Sheffield Township is one of the twenty-seven townships of Ashtabula County, Ohio, United States. The 2000 census found 1,491 people in the township. Statewide, the only other Sheffield Township is located in Lorain County. The first settlers in Sheffield Township were John Shaw, a former British soldier, and his wife, who came in 1812.