I thought I would resurrect this old thread to give a complete answer to your question, A Tree For Trials.
Ellis County, Kansas was settled mostly by Germans from Russia, Volga Germans as they are called. These were German-speaking people who had settled in the Volga River region of Russia in the 1700s, seeking political, economic, and religious freedom. They started migrating to Ellis County, Kansas in the 1870s, homesteading land along the Union Pacific railroad. This particular group of Volga Germans were Catholic.
Which is quite unusual - they were mostly either Lutheran or weird protestant sects.
Thanks, very interesting!