This oral history, written down by Howard, I cannot verify. I have more information on it here: http://heathersgen.blogspot.com/2013/01/henry-goehring-kurtz.html
John Nichols Kurtz came to Philadelphia from Halle University in Germany about 1745. When Mulenburg came to Pa. to look after the German Lutherans he found them scattered and without ministers, so he sent to Halle and asked for teachers. John Nichols Kurtz was one of those teachers. The school that Mulenburg founded in Philadelphia later became Mt. ariy Seminary.
Benjamin Kurtz, a descendent of John Nichols Kurtz, taught at Gettysburg, but he wanted to establish a different kind of school, so he came to Selinsgrove from his Missionary Institute, grew Susquehanna University. He was a bachelor and brought his sister to Selinsgrove to keep house for him. She became the wife of Scharf and the mother of Grandmother Lumbard.
There are Kurtz's in Virginia. When my mother was young she used to visit them and I even remember her getting letters from Virginia. There are also some living in York County, Pa. The name is still famous in the Lutheran Church and I sometimes see it in our church paper.
Johann George Kurtz
Anna Katharina Bender
Johann Willhelm Kurtz
John William Kurtz
Anna Maria Keller
Henry Goehring Kurtz
Ann Elizabeth Kurtz
Joseph D. Scharf
Joseph A. Lumbard
Title : Pennsylvania Genealogies : Index of Surnames
Ancestry.com. North America, Family Histories, 1500-2000 [database on-line].
Provo, UT, USA: Ancestry.com Operations, Inc., 2016.