Mennonites arrived at Mountain Lake in 1873. Mennonites are a Protestant Christian group with sixteenth century European origins. Their name refers to Menno Simons, who was a Dutch religious reformer. Simons preached a fundamentalist, more literal interpretation of the Bible. He also emphasized the importance of adult baptism. Along with these beliefs, Simons promoted a simple way of life similar to Jesus Christ and the apostles. As part of his creed, he stressed the importance of Christian brotherhood, pacifism, and the primacy of family in Christian life. The tenet of pacifism played a significant role throughout Mennonite history.