Ekkehart IV of Saint Gall (c.980c.1060) was the favorite pupil of Notker III (Notker der Deutsche). This volume seeks to critically reevaluate earlier research and to open new perspectives on his diverse works as seen from various disciplinary perspectives (German studies, Middle Latin studies, historiography, and musicology), with a special focus on the German glosses attributed to him and on his renowned Casus Sancti Galli.