I don't think you can post a full gedcom here, but if you ask the question on the 'technical help' board someone will be able to tell you.
Have you been in touch with John? I see you have removed your email address, which is what I was going to suggest, best just to use those in personal messages. If you have contacted him, you can send him your gedcom by email.
If you could just post the relevant 1901 census information here about Christopher, not the whole family details, and then start a separate new query about the rest of the family that you need help with.
Kind regards,
Barbara
