I am really struggling with the Dunn family who I believe were based in Dudley, Worcs, prior to 1750ish. I have found my ancestor Richard Minor Dunn and his siblings but am struggling to go back further. Richard Minor moved to Derby and made a considerable fortune (now all spent worse luck) but I know nothing about him or his family at all. Any pointers about where to look (IGI has been very useful, but limited) would be gratefully received.