Can't figure out who best to contact?
Or how to get their attention by targetting your message?
Check out how to Visualise your Ancestry DNA Matches
Shelley Crawford has written several very clear posts about how to use NodeXL (and DNAGedCom.com's Ancestry download tools) to make sense of the morass of data.
Thank you to whoever mentioned this on the FaceBook group Genetic Genealogy Tips & Techniques.
The instructions enabled me to reasonably quickly get from my seemingly endless screeds of data to be filtered and diced and sliced to:
and then this filtered set of groups that actually do have interactions - or have a match of particular interest in them:
It does also rather highlight that I have a dearth of interconnected Ancestry matches up to "4th cousins" - only 147.
Of that 147 there's one 1st cousin (not included in the networks above to reduce clutter), one 2nd cousin, 6 predicted 3rd cousins (5 known to range from 2nd to 3C1R, the 6th unknown), and the remainder (139) predicted 4th, only 23 of whom are "placed".
Within an hour of posting my first targetted message to a 29cMs match asking if they had any idea how the three people connected I had a response - with a Perthshire connection identified between them, so possibly that Henderson/Millar brickwall will crack one day after all - once I figure out where it can be fitted into my tree!