This sounds like Cinderford to me. Although the Heading to the 1851 Census pages should read East Dean, St John. St John's was consecrated about 1844/1845. It was the most important church after Newland, the 'Forest Cathedral' from 1845, maybe even more so. The Parish Registers are voluminous. Not surprising as it covered an area which had been previously 'Extra Parochial'.
Regards,
Roger