Complex sentence: The Staffelter Hof name, originally belonging to a wine producing abbey, goes as far back as 862, the first documentation of which was found in an original document now located in the city archives of Lüttich/Liege, Belgium.
Split into simpler sentences: The Staffelter Hof name, originally belonging to a wine producing abbey, goes as far back as 862. The first written documentation of which is in an original document now located in the city archives of Lüttich/Liege, Belgium.