Thanks again. I don't know if N is willing to do another DNA test, but I should point out that I'm not in contact with R at all and can't see her tree.
I realise now that R could theoretically be on the same parent's side as the other matches, because she tested with a different company and no matches would show. Her family is based in Birmingham, as are N and the Lee branch in the mini-tree (but not ther other branches) but N has checked and found no matches with anyone in her own tree.
All this is nothing to do with me - my branch is the Hancox and N's father is looking very unlikely to be from them.
