The nearest I can see for Maria in
1851 is
HO107/1584 97 16
Deptford St Paul, Kent
6 Carlton CottagesAnn Dodd, head, wid, 58, Annuitant, b. US Carolina
Elizabeth Eaton, granddau, 14, scholar, at home, b. Liverpool
Maria James, visitor, unm, 20, b. Warwick
Charles Trousdell?, visitor, unm, 23, Mariner, b. Ireland Limerick
Alfred Welton, visitor, unm, 21, Engineer's draughtsman, b. Kent Deptford
Hard to tell if this is her - and not very useful anyway