This is interesting .. here we have a North Shields/London connection.
It makes you wonder whether the Stuparts were born in Northumberland .. moved to Middlesex and married their spouses. In Robert's case he could have returned home with his wife and family .. ?
It would be nice to find out whether Esther was Sophia's aunt by marriage.
1851 census:
HO107/1523, Folio 231, Page 19
Middlesex, Finsbury
St Lukes
J Stupart, h. mar, 56, General Pract? , b. Northumbd, North Shields
Esther, wife, 54, b. Middlesex, Holburn
Francis, dau, unm, 20, b. Yorkshire, South Cave