If you have access to Ancestry (and Public Members Trees) there are quite a number of couple Thomas ROSSER/Sarah HOWELLS, (parents Henry HOWELL, 1777-1855 & Susannah JONES - 1790-1851 (witnesses: A COOPER & Mary COOPER) whom he married 12 April 1832. Worth comparing people's various trees and information etc.

Parents (for Thomas) given as George ROSSER 1760-1822 - wife Elizabeth BARROW - 1770-1812 - (married 11 October 1791)

children

Elizabeth 1792-1800
George - 1794 ***
Eleanor - 1796 ***
Charles - 1798
Joseph - 1800 (Quarryman on later census, married Hannah SMITH - 12 July 1823, Littledean - witnesses A/Mary COOPER)
Elizabeth - 1803
Anne - 1809
Thomas - 1809

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1851 Census, West Dean
Tufton Cottage

Ellen HILL - Widow - 55 - Laundress - born Newland
Caroline - 23 - Governefs (FOD records - baptism at Coleford 30 December 1827, Thomas (stonecutter)
Hannah - 20 - Dressmaker
George ROSSER, unmarried, brother - 57 - Tailor.

---- FOD records, Elinor ROSSER married Thomas HILL - 10 March 1825, Newland

1841 Census, Dean Forest, Ross, St Briavels

HILL

Elenore - 44
Caroline - 13
Hannah - 10
Thomas - 5

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Trees goes back even further to 1515

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Gloucestershirebdm

Children of Thomas ROSSER - and mother's maiden name HOWELL(S) - Forest of Dean, Coleford

George - 1838
Ellen - 1841
Samuel - 1844
Male - 1848
Lydia - 1849

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There is an old message on Gloucestershire Rootsweb (1999) - Coleford Millenium project - which has 1830 Directory of Coleford Tradesmen, Thomas ROSSER, stone-cutter.

http://archiver.rootsweb.ancestry.com/th/read/GLOUCESTER/1999-07/6931524869

Under Heading: Coleford Tradesmen 1830