23andme characterizes K.H. as my father’s first cousin (8.11% share) and my second (4.4% share). We are related via my Henderson and Aldridge lines, and much more closely in the latter. He is, in fact, my father’s first cousin, once removed. K.H.’s mother and my father’s grandfather were siblings.
K.H. shows a distant match with W.B., but not her daughter W.M. (My father and I show no match with either. Nor does E.H., who is K.H.’s nephew.) W.B. and W.M. are descended from Napoleon Hagans through his son William S. Hagans. Napoleon was the half-brother of Frances Seaberry Artis (my great-great-great-grandmother and K.H.’s great-grandmother.)