Fantastic result, Bob, and many, many thanks to Janet's dad.
I'm sure John-P and David will be delighted to hear that after all the help they've given us, we have now tied four out of five Bedfordshire Armstrong branches to the common ancestor - John Armstrong of Riseley who surfaced there baptising children in 1701.
We only have Samuel of Elstow and his daughter Edith and her Busby-Armstrong descendants left to tie in....
That's the "church mice" of course - there are still the "posh lot" from Ireland that don't hook up with us peasants, but then we never expected they would. Not in recent generations, anyway!
Thanks, David and John - your info and research on our behalf was invaluable in helping to cement the circumstantial evidence that gave us the potential for this new link.