Hi John S.,
It looks as if DAVID GRIFFITH(S) died at 52 Creswick St. in May 1909 (burial on this website) buried at City Road Cem.,
and that EMILY GRIFFITHS (nee Shelley) possibly re-married at the age of 60 in 1918/31st March, at Christ Church, Wadsley Bridge. to DAVID THOMAS HUMPHREYS
EMILY HUMPHREYS died Sept.1923 age 65 at 1st court, 5 Parkview Rd, buried at City Road Cem. (also on this website)

DAVID THOMAS HUMPHREYS died Feb/1933 age 71 at
Fir Vale House, buried at Burngreave Cem. (also on this website).

To your other question: There is a marriage (again on this website) on 26th Feb/1882 at St. Jude's. Moorfields between EMILY SHELLEY and DAVID GRIFFITH,
Brides father John Shelley.
HAPPY HUNTING:sleuth_or_spy: