Do you have their marriage cert?
James Brown dec qtr 1909 Newport vol 11a pg 434 with Elizabeth Maude Everett on the same page
The date of birth given on her death reg looks to be out by a year. According to the death reg, it's 29/7/1893 but the birth is a year earlier
Elizabeth Maud Everett sept qtr 1892 Newport vol 11a pg 191
Quite an age difference between the spouses, if the age for James is correct. There's no middle initial for him on his marriage and the only James Brown death registration in 1939 in Newport is for a younger man
James Brown 51 june qtr 1939 Newport vol 11a pg 207
There's a death reg the previous year for a James H
James H Brown 70 june qtr 1938 Newport vol 11a pg 219
Have you tried looking for them on the 1911 census? Using the free search on
http://www.1911census.co.uk/there's a James Brown with a Maude in the same household in the Newport registration district & his age matches the one who died in 1939, not the one who died in 1938.
Think you need the marriage cert from 1909 for the occupation of James's father as there are several James born around the time with father Thomas living in London. Names of witnesses may help as well.