Ulrich of Eppenstein served as an abbot for an Abbey located in which city in Switzerland ?
Ulrich of Eppenstein: ca.1047–1121) served between 1071 and his death as Abbot of the powerful Abbey of Saint Gall. Abbey of Saint Gall: The Abbey of Saint Gall (German: Abtei St. Gallen ) is a dissolved abbey (747–1805) in a Roman Catholic religious complex in the city of St. Gallen in Switzerland.
St. Gallen