Hi:
This is probably wrong, but the birth dates, birth locations and occupation seem quite similar. So thought I would pass it along just in case.
1871 census:
John Douglas, 34, 1837, ironmonger Warehouseman, Coventry, Warwicksh.
Fanny, 29, 1842, Hull, Yorksh.
Fanny L, 8, 1863, Depford, Kent
Emma, 7, 1864, Depford, Kent
James K, 5, 1866, Depford, Kent
Lucy, 2, 1869, Depford, Kent
Thomas W, 10 mo, 1871, Depford, Kent
RG10, piece 4644, folio 70, page 40