'In her autobiography, Living History, Sen. Clinton makes several references to her "formidable" paternal grandmother, Hannah Jones Rodham, and describes Hannah's background of "black-haired Welsh coal miners". Despite this, a number of genealogists claim that Sen. Clinton's paternal grandmother was Mary Bynum Jarnagin, born in Tennessee with distinguished Colonial ancestry.
It's not known where this error started, but Mary Bynum Jarnagin married Hugh Rodman, not Hugh Rodham. See, for instance, [broken link removed] and http://www.angelfire.com/realm3/ruvignyplus/026b.html. '