I note the baptisms of their first 5 children, others on 1851 census posted by Carole
Edward, George, David, Mary Anne, Sarah, William, Albert & Benjamin.
I guess this is Sarah from the information posted.
Sarah Finch
Baptism 3 Jul 1808
Chislet, Kent, England
Elizabeth Finch
There are two Preston’s in Kent I do not see a baptism for George in either. Preston (Faversham) &
Preston on Stour.
Preston on Stour is 3 miles from Chislet. However there are a number of baptism is the County, the one below might be worth a further look?
George Read
Baptism 29 Nov 1807
St. Dunstans Church, Canterbury, Kent, England
William & Ann
Colin