All the census state Stogumber as his place of birth. His siblings

George bn 21/5/1801 bapt 16/6/1801 Stogumber
Francis Upham bn 21/11/1802 bapt 31/12/1802 Stogumber
John bn 11/9/1804 bapt 5/8/1805 Stogumber
Ann born 7/6/1806 bapt 8/7/1806
William Upham bn 28/11/1809 bapt 10/12/1809 Stogumber
Thomas Upham bn 21/1/1812 bapt 24/2/1812 Stogumber
Jane Upham bapt 13/12/13 Stogumber

I just can't find a James unless I am completely wrong.