I wonder if the ages are incorrect in the 1881 census and this is the couple living at 322, Bristol Road, Edgbaston.  I think the probate granted when John died in 1888 lists his last address as Bristol Road.
POUNTNEY, Jno R Married   56  Leather Merchant Retired b Birm, Warwickshire    
POUNTNEY, Milicent    Wife    60 b Salisbury, Wiltshire       
JONES, Emma    Servant     21  Gen Serv Dom      
MARSH, Margt    Servant    25  Gen Serv Dom
RG11 piece 2953 folio 110 page 43 
    
Kay