Hello there, John!I am a direct decendant of Urusla, too, through her marriage to my ancestor, John Leysath.
There was a good write-up in the Sept. 1984 issue of the National Genealogical Society's quarterly about another family that contained a treasure trove of Geissendanner information...
Their uncle, also John Geissendanner, was apparently the first minister in the Orangeburg Township, SC, area, and spoke German, having come from Lichtenstieb, Switzerland around 1735.He was an unordained minister in the Lutheran faith (I've also seen listed as Swiss Reformed).
His nephew, also John Geissendanner, (Ursula's brother) took over the ministry at the age of 19, and was ordained in the Church of England in 1949.He could write German, Latin and English; not sure about the uncle.
Some of the other info of note about the family in the NGS publication:
There was a newspaper run by the family, called the Giessendanner Register (yes, I notice a spelling error; typed it as shown in the notes of said article).
Henry Gissendaner was on the jury list for 1778-1779
Have seen in other printed matter (sorry, do not recall where) that Uncle John was a goldsmith by trade back in Switzerland, and also that Ursula's own dear brother purchased 300 acres of land in an area called Cow Castle Swamp.