I live in Iowa and I too am looking for ancestors in your neck of the woods. I have a Robert W. Butler who was born in Maryland 1799. Could your Jonathan and Sarah have had another child? My Robert lived in the Iowa County area and is buried in Clothier Pioneer Cemetery. There was mention of a Ruth in something I had read. Found family in Randolph Co. Ind. Then Robert showed up here in Iowa. You can search my tree posted on ancestry. Or, just send me a note to Larryjoebutler@yahoo.com
Thanks for your note. Larry B.