Hi Impy,
I haven't looked at subsequent replies received so far, but would like to add my findings, which I hope will be of some help?
Source: Gloucestershire Family History Society (GFHS) Baptism Index, 1813-1837:-
Thomas JENNER, son of William & Sarah, a Butcher of Standish, baptised at St Nicholas, Standish, 19th April, 1818.
Daniel JENNER, son of William & Sarah, a Butcher of Haresfield, baptised at St Peter, Haresfield, 11th December 1814.
Sarah JENNER, daughter of William & Sarah, a Butcher of Hardwicke, baptised at St Nicholas, Hardwicke, 16th June 1822.
I found NO trace of William & Sarah's marriage.
Victor