Wow... there's some sort of connection here. Maybe not blood related but I think our ancestors certainly knew each other.
Binsdorf and Trillfingen are all in the vicinity of Gruol. In fact, BInsdorf is the next village south of Gruol. (I have ancestors from Gruol and one married a woman from Binsdorf.)
I'll bet the Philip BISINGER who witnessed your Barbara BISINGER's marriage is the same Philip BISSINGER who witnessed my great-great grandparents' marriage on 15 Dec 1867 in Pittsburgh. (I received the double "S" spelling from the Diocese of Pittsburgh when they researched the marriage, but I'm sure it's immaterial.)
I wonder if the Philip BISINGER who witnessed the marriage of John BISINGER and Bernhardine RAIBLE in Germany is the same Philip who witnessed the marriage of their daughter Barbara in the USA?