There is a Public Members Tree on Ancestry for this family..... Here is the 1841 Census

Gloucestershire
Dean Forest
Ross
District 11
Horse Pool Bottom

William MALSON - 60 - Labourer - all born in County
Catharine - 60
William 20
Thomas HARRIS - 30 - Coalminer
Martha - 30
George - 7
Mateinda - 4
Lucya - 3

(if you look at the 1851 census - the page before at the bottom has)

William MALSON - 77 - Ag Lab. born Gloster, Abingham
Catharine - 73 - born Glos. Mitcheldean

and then

over the page

Thomas HARRIS - 42 - CoalMiner
Martha - 38
Belinda - 14
Harriet -1