Jo,
George Gorringe and his parents Edward and Mary Ann were from Kent. Although Thomas Rowden was Sunderland-born, the Surname Profiler web site shows the Rowden surname roots to be in Kent.
( But this is very longshot ! )
The birth of a Charlotte Ann Gorrings was reg with Sunderland DRO in Dec Qtr 0f 1876. Death registered Mar Qtr 1878, for a 1 yr old Charlotte Ann Gorringe aged 1 yr. Margaret Jane's mother was Charlotte !
George Gorringe marries Sara Ann Douglass in 1890. I wonder if he married her in same site ( RO or church) where he married Margaret Jane !.
As you say, on C1891, Margaret and son James Rowden Gorringe are in the Workhouse.
Her sons Thomas and George are lodgers in Hind St.
Dastardly George is with wife Sarah in Hylton St. Her father Andrew is in Johnson. These three addresses are very close.
And guess where the workhouse was ? Just off Hylton Street !
I wonder what happened to Margaret and why could she not get supported by the extended family.
When her brother Thomas lost his wife, Jane, aged 32 yrs, his sister-in-law, Elizabeth Stewart , nee Morris, took in his dtr Charlotte, and he and his other dtr Barbara lodged with his sister Charlotte and his brother-in-law Thomas Rowden.
And a strange coincidence.. Thomas Gorringe had married
Margaret Jane Naisbett in 1873, and she was similar age to Margaret Jane Muckle/Gorringe, and both born in Sunderland.
Like you and others, I can see Marg Jane nee Muckle on C1901 or in death registrations, or under maiden name or marriages.
Back to the Workhouse angle. On C1981, she is correctly recorded as a married woman. Now I am not absolutely sure about this, but I think Union Workhouses would not support someone without trying to limit the cost, e.g. returning folk to their own parish, or making a claim agaist the "home" parish. But MJ was in her home parish. But they knew she had a husband. I wonder if they knew he was just around the corner, and wonder if they tackled him for cash ?
Tynemouth was my home workhouse,( lovely Full English breakfast every morning, and a drop of brandy before bed ) Their records are available, not just the 10-yrly census listings , but for admissions and departures and classification under which folk entered the w/h. and etc. But where to see Sunderland's records ??
County Record Office in Durham City... Sunderland library..??.
I notice George fathered two Georges and two Sarahs !
Best of luck.
Michael Dixon ( saw some Gallaghers in w/h, on previous page tp Margaret Jane )
Michael Dixon