Is this the Thomas who married Joan and is living at Rock in 1881 census - see COXON ALL file and B118.
1861 census Embleton Village
Thomas Coxon/H/M/27/Ag Lab/Longhouton
JohnAnn/Wf/M/25.SCT. Eachford
Elizabeth Hannah/D/4/Eglingham
Agnes/D/1/Embleton
1871 C Embleton
Thomas/37/Miller & farmer 2 men,1 boy/Longhouton
Johann/Wf/33/Chatton (? Sct in 1861)
Elizabeth H/D/14/Embleton(should be eglingham)
Agnes/14/Embleton
William/11/ditto
Jane/7/ ditto
Thomas/5/ditto
1881
Dwelling: Rock Mill
Census Place: Rock, Northumberland, England
Source: FHL Film 1342238 PRO Ref RG11 Piece 5125 Folio 70 Page 8
Marr Age Sex Birthplace
Thomas COXON M 47 M Alnwick, Northumberland, England
Rel: Head
Occ: Farmer Of 147 Ac Employing 4 Labourers And 1 Boy
Joan COXON M 45 F Chatton, Northumberland, England
Rel: Wife
Occ: Farmers Wife
Elizabeth H. COXON U 24 F Embleton, Northumberland, England
Rel: Daur
Occ: Farmers Daur
Agnes COXON U 21 F Embleton, Northumberland, England
Rel: Daur
Occ: Farmers Daur
William A. COXON 15 M Embleton, Northumberland, England
Rel: Son
Occ: Farmers Son
Thomas E. COXON 11 M Embleton, Northumberland, England
Rel: Son
Occ: Farmers Son
Robert M. COXON 9 M Embleton, Northumberland, England
Rel: Son
Occ: Farmers Son
Mary J. COXON 5 F Embleton, Northumberland, England
Rel: Daur
Occ: Farmers Daur

1891 Rock Hill
Thomas Coxon/H/M/57 years/Farmer/b Harlow Hill,NBL
Joan Coxon/Wife/M/55 years/b Fowberry,NBL
Robert Coxon/S/Unm/19 years/b Embleton,NBL
Mary J.Coxon/D/15 years/b Rock Hill,NBL