Hi,
Having searched through the burial registers of Manchester General Cemetery (Non Conformist only) they do record still born burials. In some cases they put the parents name(sometimes only the surname) and address. As you would have an address form the birth certificate of the other child it might be traceable.
If you have an idea which Cemetery (if it was a cemetery - not sure about Crematoriums- though they possibly would keep the same kind of records) and they have burials registers it's worth a search, as you have said it was a twin. (Though when registering they may not have stated the child as a 'twin')
Do you have any information if the child was a still born or did he/she survive to a certain age?
Searching for the Burial Registers possibly at the Office or a library could help with your search. Or contacting a Crematorium if there was one in the town at that time? They may each offer a search for a fee? Or if you track them down search them for yourself or maybe someone with access would offer to do it for you?
Cancan
