To find out where Harriet was born (on her marriage, Thomas (father) occupation Labourer) - Looking at the 1861 Census, Cornelius & Harriet MASON are in Ruardean (District 7 Page 20) - all the family 'say' they were born in Ruardean

Cornelius - 32 (Stonemason)
Harriet - 28
John - 7
Thomas - 4
Dinah - 2

Possible ?
On the 1841 Census, for Dean Forest Ross, District 12a Page 6 - Anchorbury
(Monmouth - Coleford) - also listed on the FOD records (Submenu) census index

Wm COOPER age 25 - Carrier (christened EB 1816- father Thomas, Labourer)
Sarah - 20 (christened English Bicknor 1818)
Mary - 20 (christened EB 1820)
Thomas - 15 (christened EB 1825)
Hannah - 12 (christened EB 1828)
Harriot - 8 (christened 16 June 1833 EB)

On FOD records, parents Thomas & Mary

Ruardean is about 3 miles from English Bicknor