James A. Cook married Rebecca J. Young Lincoln, young widow in 1840s in IL By 1880 census, both in their 60s (he born NY, she born RI), living Litchfield, Montgomery, Illinois She is invalid, then no more record of either of them is found. Her son moved to Missouri and then Toledo, Lucas, Ohio. I cannot find them anywhere alive or deceased after the 1880 census. Where did they go, or did they die there?