Hello John, If you do not have access to GRO indexes for the marriage, have you looked at <http://www.durham.gov.uk/gro/search.nsf/search+index> Assuming they married locally of course! There are 2 marriages indexed on here between the years 1901-1910, between a Robert SAYERS and an Elizabeth. You should be able to cross reference with the mother's maiden name on the birth certificate which you have. Regards, -- Helen Oram