Are you sure that she was married before. Have your got the birth certificate for her child. There is a birth for Gertrude, (child can be seen on the 1901 census with the
Harrison family) but look at the 1891 census entry, where a girl called Sarah J
Nash is a domestic servant.
Births Jun 1898
Nash Gertrude Alice Darlington 10a 18
Marriages Dec 1898
NASH Sarah Jane Darlington 10a 57
BELT, James Head Married M 51 1840 Farmer Northallerton
Yorkshire
Greenbury
BELT, Elizabeth Wife Married F 52 1839 Darlington
Durhamshire
BELT, Richard H Brother Single M 31 1860 Chcheston
Durhamshire
NASH, Sarah J Servant Single F 20 1871 Domestic
Servant General Gainford
Durhamshire
MACEY, George Servant Single M 19 1872 Farm
Servant Gilling
Yorkshire
WORD, Anne E Servant Single F 17 1874 Domestic
Servant General Darlington
Durhamshire
BOLTON, Frederick Servant Single M 13 1878 Farm
Servant Cowton
Yorkshire