To help us all in our searches, this is the 1871 census:
Class: RG10; Piece: 5670; Folio: 49; Page: 17
Garred No 2, Bettws yn Rhos & Maesegwig, Denbighshire
Fergusson, John Head M 48 Sawyer Holding 6.5 Acres b Scotland
Fergusson, Martha Wife F 45 b Stone, Staffordshire
Fergusson, James Son M 14 Engineer b Sandon, Staffs
Fergusson, Martha Anne Daughter F 7 Scholar b Sandon
Fergusson, John Cargy Son M 5 Scholar b Sandon
Fergusson, Francis Son M 1 b Betws yn Rhos
1861 census: Class: RG 9; Piece: 1911; Folio: 135; Page: 7
Park Side, Sandon, Staffordshire
Furguson, John Head M 39 Circular Sawyer b Scotland
Furguson, Christiana Wife F 39 b Scotland
Furguson, Jane Daughter F 11 Scholar b Scotland
Furguson, Mary Daughter F 8 Scholar b Staffordshire
Furguson, James Son M 4 Scholar b Staffordshire
Death, September qtr 1861
Stone district vol 6b, page 14
Fergusson, Christine
Marriage, June qtr 1862
Stone district vol 6b, page 75
Fergusson, John
Foster, Martha