Hi Ian I think you are a little bit new on this, so my apologies if I sounded a like bit harsh All you need to do is tell the register Office that there are two possible dates ( give them the periods) and tell them that you want the birth certificate of Louisa who whose parents are Walter Scott / Mary Hannah Burns. If they have it, they will send you it, if not, they will return your cheque. You would be very unlucky to find x2 Louisa's with same parents names With regards the marriage - you can either look at the 1911 census for Louisa married to Barrow or /Chesworth and check her age and place of birth to see if she fits your criteria. I have not got access to the 1911 census, so I cant look it up for you. You could ask someone on the Rootes web list to do a look up for you Alternately, tell the Register Office that you are wanting the marriage certtificate of Louisa Scottt who has a father Walter who occupation is a rope twiner and tell them the two possible dates. Give them her age also. The same rules apply as per the birth certificate, you will not be charged if they cant provide the certificate. The rule in all this is, the more information you tell them, the less chance to obtaining the wrong certificates Some Local Register Office will do up to a five year search if you ask them. I hope that helps you Regards Lenny Researching the Beaumonts of Yorkshire