the baptisms aren't in the Bts images on FamilySearch. I posted them in case they helped others looking for their census entries.
Baptism St Peter in the Forest, Walthamstow
19 April 1863 Edward son of Frederick, chair maker, and Elizabeth Smith
James was baptised the same day as his brother Frederick, his date of birth noted as 14 Dec 1858.
Another baptism
Braintree 30 Sept 1853 Cornelius son of Frederick, chair mender, & Elizabeth Smith, date of birth noted as 19 Sept 1853.
Possible birth regs
Cornelius Smith sept qtr 1853 Braintree vol 4a pg 276 mmn Law
also a possible twin, William, with same ref baptised same day as Cornelius but father noted as Abraham, chair mender
James Smith dec qtr 1858 Billericay vol 4a pg 114 mmn Law
Joshua Smith june qtr 1860 Saffron Walden vol 4a pg 364 mmn Law - burial Bartlow, Cambs 22 April 1861 Joshua Smith aged 11 months