Hello, I am trying to find ancestors of Katherine W. Kraemer born abt. 1841, unknown location. She married my great grandfather, John Henry Riefenberg, between 1863-1867 in Warren County, MO possibly Marthasville. I believe she either died or they divorced between 1877-1890. All I have to go on are the obit of J. H. Riefenberg, the 1860, 1870, 1880 Warren County census, and family recollection of her name and it's spelling. She may have had as many as 5 children by this marriage. Her second child became my grandma. Thanks for any help you can provide.