Have you checked Broken Bow, Custer Co., NE. or The Custer Co. Historical Society in Broken Bow ?Several years ago my Uncle Criss Ash who lived in Broken Bow talked to a Mr Esch, I do not remember his first name, but is probably the same family. You may already know about them. We have just found out our Ash/Esch line came from Runkle, Hessen, Germany area.