Joss, the original marriage registers WILL have the signatures of your great grandparents. Additional information that MAY be found:- 1) place of baptism 2) date of baptism 3) whether the bride (or groom) was Christian - if so of what kind 4) name of mother 5) dates and places of other life events 6) consanguinity I would send your friend along with her camera, she may be allowed to photograph the register. Or better still go yourself. best wishes, Mark