I think this is the marriage you are looking for.
Taken from GFHS Marriage Index:
12 June 1819 Basil MEEK of Hundred of St Briavels married Elizabeth JONES of the Hundred of St Briavels by Banns at Mitcheldean.
(Hundred of St Briavels = extraparochial)

From GFHS Burial Index:
Date: 10 SEP 1837
First Name: ELIZABETH
Surname: MEEK
Age: 40
Burial Register: EAST DEAN(DRYBROOK) HOLY TRINITY 1817-1839
Place of Abode: BAILEY HILL
City of Abode: -
Relationship: -
Relationship To: -
Occupation: -
County: GLS
Additional Information:
OTHER DETAILS

Mike