Maria may be Mary Cox 1851 Census and living in Warwickshire with her Aunt/Uncle, Charles/Sarah Godwin.
Charles married Sarah Cox 29 Apr 1822 Hempstead, Gloucestershire
Both of Littleworth Hamlet
Sarah Cox was Bapt 21 Feb 1802 Yate, Glos to THOMAS/GRACE
Now a THOMAS/GRACE Cox Bapt a ISAAC Cox 3 Nov 1799, St. Mary-Northgate, Canterbury, Kent
I may be way off here but seems too much of a coincidence to me?