I think I may have found Emily but not the family.
Staffs Census 1851 Piece 2014 Folio 369 Page Number ?
222 Sandford? St North Litchfield St Mary
William Priest? Head 54, Horse Keeper, b Warwicks, Stonebridge? Louisa, wife 51 ,b Derby,s Walton? Ann Unmarried dau, 24, Alice Unmarried dau. 16, James son 13,Emily Shirley, Visitor 6. All the latter b Litchfield.
There are two other references to Shirley at Folio 500 and 505 but the scans are barely readable but I cannot make out an Elizabeth.