Just been having a look around -and it seems the martha found in 1881 is probably martha jackson
1891
messingham Lincs
Hall Farm Cottages
Martha R Kettlewell Head W 49 Ret farmer's wife (crossed through) Washerwoman and general work Belton
John Kettlewell son 15 Farmers day boy Yorks Armthorpe
Joseph R son 9 Lincs Scotton
RG12 2628 137 2
1901 -looks like George and Joseph Kettlewell were living with sister matilda??
I was posting at the same time as you!!!!!
Will chase them up now
1901
Rotherham Yorks
53 Wilson gardens
George bessindale Head M 54 Carter at Ironworks Lincs belton
Matilda wife 40 Belton
Martha A daughter 4 Yorks Mosborough
George Kettlewell Boarder S 22 Platelayer on Railway Lincs Scotten
Joseph Kettlewell boarder 20 Lincs Scotten
RG13 4396 139 10
marriage freeBMD
Mar qtr 1890
Thorne reg dist
on same page
George Bassindale
Matilda Kettlewell
9c 817
It seems Matilda's birth reg as Jackson, she was Jackson in census til 1881 when she was Kettlewell, and she married using the name Kettlewell-perhaps the children started using the name Kettlewell by 1881 when their Mother and Richard Kettlewell (who it seems was very possibly the father of all/most of the children) were living as man and wife
??
1881 Gainsborough Lincs
Melville St
Frederick Benson 32 Cabinet maker emp 4 men 5 apprentices Lincs
Beatrice H 34Yorks
Maude H 3 Lincs
Hilda B 3mths incs
MATILDA KETTLEWELL servant 21 Servant Domestic Lincs belton
RG11 3295 91 4
1891
William Bassingdale head W 77 farmer
George son M 44 Farmers son
MATILDA daughter in law M 32
all B Belton
RG12 3868 57 20
I will leave this for your perusal -and if you are convinced this is the family you are seeking, if you wish, I will "chase" the whereabouts of Martha's other children
Suz