How about Janet P STEWART who married EGAN in West Ham Dec qtr 1924. Husband was Frederick A EGAN.
Possible children are: Beryl H Mar qtr 1925 and Colin F Sep qtr 1928, both in West Ham.
Beryl may have married SAUNDERS in Romford 1951
Colin may have married HISCOCK in West Ham 1966
This family in 1939 are: Janet P born 31st July 1897, Frederick A born 8th Sept 1897, a timber merchant working for Himself.
A child is with them Colin Ti, born 24th July 1928.
There is 1 hidden record, and in the way this is numbered I would say a child older then Colin.
The address as transcribed is - 28 Hazel Rise, Romford, Hornchurch U.D., Essex, England.
From all the clues, I would say I am certain that the 1939 family is the one, but of course there is no proof the wife is the STEWART you are looking for. I think though I found proof for you.
GRO death recorded as Janet Penman EGAN - Sep qtr 1976
Worthing RD , West Sussex
Volume: 18
Page: 2025
date of birth 31 July 1897
It is possible using free BMD to work out children of the marriages. Find My Past (and possibly other subscription sites) have electoral rolls up to about 2019 that contain names and ages of residents, and full addresses. Sometimes it is possible to work out a likely person to write to.