Cynthia, I went to the Ellington Library and copied a page from the "History of Shannon County Missouri 2001". It has an article on William Duncan Chronister, but I missed part of the page when I copied it. It doesn't seem to give much more information than you already have. It says "William, son of Daniel and Mary "Polly" (Duncan) Chronister, was born Sept.5, 1824 in Cape Girardeau Co., Mo. and died in 1904 in Shannon Co., MO. He married Mary Ann Wadlow, daughter of William and Nancy (Bishop) Wadlow, in 1845. Mary Ann was born Feb. 10, 1828 in Tennessee and died Dec. 20, 1861."
The article also lists children and spouses. If you think this might help I will stop again tomorrow and get the rest of the info.