I am indexing "UK, England, Lancashire—Nonconformist Church Records, 1647–1996". "County" is a required field. The record lists the city where marriages were performed but not the county. However, there is only one city of that name in England, and it was in the county of Lancashire when the marriages were performed. In other words, it is known without question what the county is, even though the name of the county is not explicitly listed in the record. Would it be OK to enter the name of the county, or should <BLANK> be entered?