Hi Elaine
Jean has again sorted out the 1891 census for you.
I found the marriage of Walter Griffiths and Margaret Anne Kelly , October 27, 1884 , Onchon , IOM ( from Lawsons micro site)
Too difficult to trace births on free UK BMD.
Too many Walter & Margaret Ann Griffiths deaths in Warwickshire to trace deaths.
Kings Norton is probably district for Bidford , which is on the borders of Staffordshire, Warwickshire and Worcesterhire.
I think you confused my searches for Margaret and Catherine . The possible deaths for Margaret were before you told us she married Walter.
However after looking again at the death of Catherine P Kelly , March Quarter 1923 , aged 58 , registered in Godstone, Surrey, I found that Godstone is 14 miles south of Upper Norwood which is in South London................so I would put my house on her being "Your" Catherine. You can obtain certificate with CC on that site, which is safe.
Could not find any marriage or death of Annie Dunn Kelly , just too many Ann Kellys !!
David Dwyer
Sydney, Australia