I see in 1841 HO107; Piece: 622; Folio: 18; Page: 5 a Christopher Marshall aged 75 is an ag lab living with the Hopkinson family - head of family George is 'Ind' in N Scarle & in 1851 HO107; Piece: 2136; Folio: 150; Page: 3 a Christopher Marshall aged 84 b Marnham 'grandfather' is living with a George Hopkinson who is now 'landed proprietor' in Sand Lane, Besthorpe.
I also found this marriage in Pallot's Index:
Name: Christopher Marshall
Residence: of Marnham
Spouse: Ann Draper
Marriage Date: 18 Apr 1805
Parish: Female N Clifton Notts 19
How does this fit with the marriage to Elizabeth Laughton in 1804
Thanks for your interest, Josey
ADDED: Also found these records online - looks like Hannah may have married again in 1835 to John Wilson, being widowed again by 1861.
Text: John Wilson & Hannah Rushby 06 Oct 1835
Book: Marriages at Normanton-on-Trent, 1673 to 1837. (Marriage)
Collection: Nottinghamshire: - Register of Marriages, 1553-1837
1851 HO107; Piece: 2121; Folio: 696; Page: 11; Normanton
John Wilson 66 ag lab b Spalford (?)
Hannah Wilson 78 b N Collingham
1861 RG 9; Piece: 2475; Folio: 55; Page: 3 ; Weston
Hannah Wilson 38 w
this should be 88 b N Collingham
John Rushby 6
should be 46 son b Marnham
Sarah Rushby 45 wife b Assington?