Matrilineal line

My most important research involves following my matrilineal line.  It isn't easy, but is the most satisfying when you get that next connection.  Right now, I am stuck in Scotland in the early 1700's.  I have a "possibility"for further research but have not located the proof that I need to proceed.  I wish I had gotten this far when I was still able to go to Scotland.  For years I was looking at Northern Ireland but had no maiden name. Once that was found, the search moved to Ayeshire in Scotland. Over the years, we have enjoyed 3 fabulous trips to the British Isles, but I think our traveling days are over.  On one trip we went to Wales, England and Scotland as well as all of Ireland but, at that time,  I had no idea that my genealogical journey was going to lead  to Scotland.