Just wanted to tell you that the lady I contacted through geneanet was really helpful. She gave me a site http://registres18.free.fr
that has transcriptions of all the BMD in the department 18 in France. I've been busy all afternoon and had a field day! Loads of info on the Beauvois family manaaged to go back to 1792!! I'm thrilled and want to thank you for your advice- couldn't have done it without you.