St. Nazianz is a village in Manitowoc County, Wisconsin, United States. Founded in 1854, the population was 783 at the 2010 census. St. Nazianz was organized in 1854 as a religious colony by a group of German immigrants, led by Father Ambrose Oschwald, a Roman Catholic priest. The first settlers in the Oschwald group numbered 113 and came to t…St. Nazianz is a village in Manitowoc County, Wisconsin, United States. Founded in 1854, the population was 783 at the 2010 census. St. Nazianz was organized in 1854 as a religious colony by a group of German immigrants, led by Father Ambrose Oschwald, a Roman Catholic priest. The first settlers in the Oschwald group numbered 113 and came to the United States from the Black Forest of Baden, Germany, seeking religious freedom.