You could use the Advance Search i.e. witnesses etc to try and find family groups e.g.

Marriage at Hope Mansell - 24 February 1827

George PARSONS - hundred of St Briavels

married

Margaret HERBERT - hundred of St Briavels

witnesses: Thomas MARFELL and Ann PARSONS ???

Geo PARSONS, wife Margaret are on the 1841 census

PARSONS

Geo - 35
Geo - 7
Ephram - 5
Margaret - 35
Lucy - 14
Margate - 1
Elizabeth 1 -

Same page: Martha HERBERT age 65 years
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Baptisms for George & Margaret PARSONS at Drybrook

Lucy - 1827
John - 1829
Harriet - 1831
George - 1834
Ephraim - 1836
Margaret - 1838
Elizabeth - 1840
John - 1843
Joseph - 1846
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but by 1851, Margaret has died.

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Burial at Drybrook - 13 December 1848

Margaret PARSONS, residence, Ruardean Hill age 41 years.

This tree is on familytreemaker.genealogy - Margaret's parents were William HERBERT and Martha WOORE -

http://familytreemaker.genealogy.com/users/r/i/c/Alison-Tracey-Ricketts/index.html

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and FOD records : Children of William & Martha HERBERT

1804 - Elizabeth - Ruardean
1806 - Margaret - Ruardean
1822 - Joy - Goodrich
1825 - George - Goodrich
1805 - William - Goodrich
1824 - George - Welsh Bicknor

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FOD records have a marriage at Newland on 4 November 1820

James BRAIN (Widower) Married Sophia HERBERT - one witnesses was Thomas MANSEL (could this be MARFELL?)

1841 CENSUS, Ruardean Hill

James TIPPINS - 25
Sophia BRAIN - 40
Ephraim PARSONS - 30
Amelia PARSONS - 25
Thos PARSONS - 2m
Tim PARSONS - 24
Jas PARSONS - 6 months