In my own family search , I too ran across a Blankenship relation to a Hatfield . Thomas Wesley Blankenship (1855-1930 ) married Nacy Jane Collins (1866-1918). Nancy Jeans father was William Collins (1806-1896) from Russel County , Va. In his second marriage he married Mary Ann " Molly " Hatfield of , and in , Logan County , West Virginia in 11/25/1860. She was the daughter of Joseph and Nancy (Evans) Hatfield . Reason I posted information , is I've found in my W.V. research , due to physical terrain , family's staied in general area's and you find where pair's of sibling's married other Sibling pairs. ....or the cousin of . I doubt this is a lead or help but you never know . Good luck in your search . Regards , Robert.