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A question came to us: I am marrying a couple of brides this week and when I talked about the ID I'll need to witness beforehand, one piped up that her name on her Birth Cert is different to all other ID but she's never officially changed it. So her photo ID is going to be different surname to her Birth ID. She doesn't have a passport. I thought I'd need to use her original name on all marriage docs (for avoiding future issues with passports etc) but am I correct or can I use her preferred surname even though the paper-trail lacks an official name change?