Thank you for your help. I agree, I don't think there is a direct link but I bet if we go far enough back there will be a link. I have been looking at a pedigree line of the Alderson's through Latter Day Saints website and the surnames Alderson and Broderick are interlinked through marriage. The line seems to come from Muker. I imagine you already know about this line. Sorry if it is already known to you. Many thanks for your help and I expect to be speaking to you in the near future. David.