Whoops just realised I did find them in 1871,haven't done research for sometime and had forgotten.
1871 census:I couldn't find Sarah or the family under the Grace Surname.I checked James Clements,,this is what I found.
They all had the surname Clements born in Brighton
Head-James Clements-age 51
Wife-Sarah-age 49
Dau-Sarah-age 28
Son-Robert-age23
Son-James-age 20
Son-Henry-age 14
Dau-Lucdy-age 1
