I think Cakebread was her maiden name, two possible births:-
CAKEBREAD, SUSANNA LIST
GRO Reference: 1844 S Quarter in EPPING UNION Volume 12 Page 92
CAKEBREAD, SUSANNA REED
GRO Reference: 1844 S Quarter in EPPING UNION Volume 12 Page 92
The 1871 has her place of birth as Harlow, Essex which is covered by Epping. I wonder which Susanna married John? Interesting that there are two registrations and the only difference is the mother's maiden name.