I think perhaps you did not undestand me. The maiden surnames of the two girls I referred to you was CHILD in both cases.
Please do have a look for females in your tree with dates of birth at around that time of whom you have perhaps little later information?
I sadly dont live in London but if you can help me, or offer me access to a web facility/page on which to seek my missing CHILD family members, next timeI am in town Ill be hapy to do so. At present I am recovering from major surgery at home - a hip replacement - and getting out of the house is difficult. I am 140 kms north of London so at present you can appreciate... 'I would, if I could, but I cant!' ;-)