Cornelius Jansen, a member of Sudermann's congregation, was his close friend. Both men became great promoters of the migration of the Mennonites to America when they found out that certain privileges, particularly those pertaining to military service, were to be withdrawn. Sudermann was one of the delegates sent to St. Petersburg to learn how the new military law would affect the Mennonites. He was sent a second and a third time in 1871. In 1873 he was delegated to go to America with eleven others to investigate settlement possibilities for Mennonites from Russia and Prussia. Eine Deputationsreise is Sudermann's detailed report about this journey. After his return to Russia he reported his findings and helped people with their emigration.
In 1876 Sudermann immigrated to America, spending the first six months in Summerfield, Illinois. In 1877 he settled in Butler County, Kansas, where some Prussian Mennonites had just organized the Emmaus Mennonite Church. He served this congregation as elder to the end of his life. He was also active in Conference work. He died on 27 January 1900 in Whitewater, Kansas.
Sudermann kept records of all his trips to America and St. Petersburg and kept a diary. This material as well as his letters show that he was a very conscientious and diligent worker. (Most of the materials are found in the Mennonite Library and Archives (North Newton, Kansas)
Claassen, Ed. "Etwas aus dem Leben und Wirken unseres teuren heimgegangenen Aeltesten Leonhard Sudermann." Christlicher Bundesbote (1900): 6.
Emmaus Mennonite Church, Record Book No. 1.
GRANDMA (The Genealogical Registry and Database of Mennonite Ancestry) Database, 5.05 ed. Fresno, CA:, 2008: #11941.
Krehbiel, H. P. History of the General Conference of the Mennonites of North America. Canton, 1898: 444.
Sudermann, Leonhard. "Bericht über unsere Reise . . . ." Herold der Wahrheit (15 October, 1 November and 15 November 1898).
Sudermann, Leonhard. Eine Deputationsreise von Russland nach Amerika vor vierundzwanzig Jahren. Elkhart, 1897.
 Additional Information
Leonhard's parents were Abraham Sudermann (16 October 1763, Goldschar, Prussia - 9 December 1840, Goldschar, Prussia) and Anna (von Riesen) Sudermann (23 November 1778, Treuenkohl, Prussia - 13 March 1851, Gnadenfeld, Molotschna, South Russia). He was the youngest of fourteen children from this marriage. Abraham's first wife was Catharina (Dueck) Sudermann (ca. 1763, Schoenau, Marienburg, Prussia - 5 January 1796, Goldschar, Prussia); they had two children.
Leonhard was married on 23 October 1842 to Maria Sudermann (4 February 1821, Kalthof bei Koenigsberg, Prussia - 8 November 1915, Whitewater, Kansas), daughter of Abraham Sudermann (b. 29 July 1790, Frauenberg, Prussia) and Elisabeth (Woelke) Sudermann (17 June 1793, Kalthof bei Koenigsberg, Prussia).
|Author(s)||Cornelius N Krahn|
 Cite This Article
Krahn, Cornelius N. "Sudermann, Leonard (1821-1900)." Global Anabaptist Mennonite Encyclopedia Online. 1959. Web. 28 Nov 2015. http://gameo.org/index.php?title=Sudermann,_Leonard_(1821-1900)&oldid=96636.
Krahn, Cornelius N. (1959). Sudermann, Leonard (1821-1900). Global Anabaptist Mennonite Encyclopedia Online. Retrieved 28 November 2015, from http://gameo.org/index.php?title=Sudermann,_Leonard_(1821-1900)&oldid=96636.
Herald Press website.
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