Jim, do you already have access via Ancestry or Findmypast to the censuses and the 1939 register?
If so, you presumably already know that in 1911 the family (Patrick, Isobel and two children, Ada and John) were living at 2, Hamilton Terrace, Hexham. Patrick was a General Labourer.
I see that Isobel died in March 1921, and she was buried on 30th March at Hexham Cemetery, Section A, Plot 359, Consecrated Section. Her place of death was 1 Orchard Place, Hexham.
In 1939 Patrick and Ada were living at 4 Jubilee Buildings, and Patrick has no occupation, he is ‘Incapacitated’. He died in June 1940 and is also buried on 20th June at Hexham Cemetery, Roman Catholic section E, plot 127. His place of death was 4 Jubilee Buildings.
If it is possible I will try to take a look in the Hexham Courant Archive at the library to see if I can glean any further information.