Wendelin Grimm was born October 18, 1818 in Kulsheim, Baden, Germany, to Valentine and Marie (Adelmann) Grimm. He grew up in a farm rich area of southern Germany, learning important crops and farming practices. In 1845, Grimm married Julianna Segner (born June 15, 1821) of Steinback, Baden, Germany. The Grimms chances to own a farm were limited by the land inheritance practices of the time. Farming and crop prices were under pressure, and their future in Germany looked grim. With a growing family to support, sons Frank and Joseph and daughter Ottilia, Wendelin and Julianna looked to America for their family's future.

In 1873, George Rodgers led immigrants from southwest England to establish the Yeovil Colony in the Red River Valley on land purchased from the Northern Pacific Railroad. Despite high hopes, the settlement of New Yeovil crumbled soon after it began.

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.