I wonder if Mary Treays is d/o Henry Treays and Sarah Grimmett as you have her a dau to William and Susan .... but we think she is the granddaughter and not dau.
Mary TREAYS
1841 Mary Treays, age 6, b. St James Clerkenwell , Middlesex, Daur. (so stated but probably G.daur. but daur. of whom?) living 1 Caroline Place, Clerkenwell, Middlesex
1851 Census Mary Treays, age 11, Clerkenwell, Middlesex,daughter, living at 1 Caroline Place, Clerkenwell ,Middlesex with "grand?" parents
will look for her
deb