One of my problems on my Charles Whitehead brick wall is that only 2 of his children had descendants - George (mine). and Alice. Alice has 61 descendants to the 5th generation and the George only has 1 with descendants. Altogether in five generations I only have 62 possible DNA connections (202 in 8 gens but some did not have descendants). My grandfather was an only child so have no maternal Whitehead 2nd cousins there. The next group are my 26 first cousins and their descendants. Possibly at Ancestry many of my "no common matches" are on my maternal side but so many don't respond to queries and too many do not have trees attached. What I do have are maternal DNA matches with 3 male 1stC, 1 female 1stC, plus 2 males: 2ndC1R. Someone told me the small number should not be a problem, but I think it is.
The great mystery to this brick wall is that I have found DNA matches to all of my other British maternal lines; even an illegitimate G-grandfather, which proved my hypothesis of his origins made before the DNA finds.
So far I have found no known cousins of any degree in this small Whitehead DNA family beyond 2 from Alice . Now wondering how to best use this limited info at Gedmatch (me and 2 of my male maternal cousins), which allows manipulation of input as to size of cms, which Chromosome to look at most closely, etc.