The Kansas Historical Society, www.kshs.org/dart/united/search/creator:marshall
County/ has deaths 1885-1911 but they're not all inclusive.
The Marshall County Historical Society, www.facebook.com/pages/Marshall-County-Historical-Society
might have newspaper death notices.
The Kansas Historical Society, www.kshs.org/index.php?url=p/newspapers-in-kansas/11528
has newspapers on microfilm.
Waterville area newspapers are online, free at http://waterville.advantage-preservation.com/
. Issues from 1870 through 2013.
Catholic church records are usually kept at the local Archdiocese. Successful Searching!