Hi
The only Walter on the 1871 that fits is:
RG10 Piece 2552 ED 2 Folio 45 Page 25 Sch 130
Reg District Clifton, sub Reg Dist St George
7 Gt Western Road, St George, Clifton, Glocs
WALTER DALLING Head Marr 60 Gardiner, Agr b Barnstaple, Devon
THIRZA DALLING Daur Unm 19 Machinist, Sewing b Barnstaple, Devon
LUANA DALLING Daur 17 Machinist, Sewing b Barnstaple, Devon
JAMES F W DALLING Gson 3 mths b St Georges, Glocs
No sign of his wife AGNES but I'm pretty sure the entry for Walter says Married and not Widower
Anne