What records led you to give a name, date, age to her father & mother?
Please reproduce so we can see, for example where Elizabeth is in birth order.
Obvious would be to search for her birth certificate to get MMN.
Pauline
23 Sep 1862 - Deptford St John
She was full age, living New Cross Road, her father Henry Finnis, Superintendent E India Dock
witness william and jane Hamlyn