Thanks for your reply. I have been looking for this for some years now and have looked at many different types of record. With regard to the Census data, for the period 1841 and 1851 in the most likely area of London there are pages which are completely illegible and there are some schedules which are missing and have not been found by the new indexing that has been done recently. Just my luck! I was hoping there might be some family memories from branches that I have not reached. We should have spent more time with older relatives before they died. Thanks for your interest.