I was surprised to discover a Luxembourg population in central Minnesota. It's far more common to see communities in the southern part of the state - near Iowa - or on the North Dakota border, where land grants were common. However, Luxembourg Minnesota bucked the trend. Founded in the 1850s as a German settlement, it shortly became home to Luxembourger families as well.
Begun in 1859, St. Wendelin is the parish church for the Luxembourg community. The parish and the adjacent school are still going strong. While the parish does not have a website, they are part of Diocese of St. Cloud. The parish itself or the Diocese should hold the vital records for the community.