Do you have access to "McDills in America", published in 1940 by Robert Woods? He has some material on Hugh McDill who came to this country in 1793 and settled in Crawford Co., PA. I find listed as one of his descendants: "Emma McDill, b. Apr. 27, 1859, d. Oct 12, 1914, bur. Bogardus Cem. (Black Ash, PA); m. Nov. 21, 1879, to William Walker, b. July 14, 1851; farmer; res. Guys Mills, PA." Four children are listed, as well as some of their children. If this is your line, maybe I can copy it for you. The book is on film at the LDS library.