here are the 1841, 1851 and 1861 that I think would be your richard and isabelle
Richard Peverall
Age: 52
Estimated birth year: abt 1809
Relation: Head
Spouse's name: Isabella
Gender: Male
Where born: Durham, England
Civil parish: Crossgate
Town: Durham
County/Island: Durham
Country: England
Street address:
Occupation:
Condition as to marriage: View image
Registration district: Durham
Sub-registration district: St Oswald
ED, institution, or vessel: 6g
Neighbors: View others on page
Household schedule number: 151
Household Members: Name Age
Margaret Buckham 24
Mary Pearson 32
Elizabeth Peverall 14
Isabella Peverall 51
Isabella Peverall 22
Richard Peverall 52
Richard Peverall
Age: 41
Estimated birth year: abt 1810
Relation: Head
Spouse's name: Isabell
Gender: Male
Where born: Framwellgate, Durham, England
Civil parish: Crossgate
Town: Durham
County/Island: Durham
Country: England
Street address:
Occupation:
Condition as to marriage:
Disability: View image
Registration district: Durham(Street Indexed)
Sub-registration district: St Oswald
ED, institution, or vessel: 9a
Neighbors: View others on page
Household schedule number: 42
Household Members: Name Age
Thomas Heslop 45
George Oliver 27
Elizabeth Peverall 4
Isabell Peverall 40
Isabella Peverall 12
Mary Peverall 7
Mary Peverall 25
Richard Peverall 41
William Peverall 16
Richard Peverall
Age: 30
Estimated birth year: abt 1811
Household: View other family members
Gender: Male
Where born: Durham, England
Civil parish: St Oswald
Hundred: Durham City
County/Island: Durham
Country: England
Street address:
Occupation: View image
Source information: HO107/320/12
Registration district: Durham and Lanchester
Sub-registration district: St Oswald
ED, institution, or vessel: 4
Folio: 13
Page: 20 (click to see others on page)
Line number: 9
GSU Number: 241358
Isabella Peverall abt 1811 Durham, England St Oswald Durham
View Record Isabella Peverall abt 1839 Durham, England St Oswald Durham
View Record Jane Peverall abt 1830 Durham, England St Oswald Durham
View Record Mary Peverall abt 1771 Durham, England St Oswald Durham
View Record Richard Peverall abt 1811 Durham, England St Oswald Durham
View Record William Peverall abt 1835 Durham, England St Oswald Durham
this may help