Yes I found her married to William, just asked if you had her marriage cert, or perhaps one of the children's birth certs to give her maiden name
Wondering if it's just a mistake on the 1871 census - In 1861 and 1851 there's an Eliza Louisa Greenfield b. 1839 Finsbury (London) and I notice there is a Greenfield/Thomas marriage in Cannock in 1909, probably coincidence
Barbara