Which position was held by XXX?
Regino of Prüm
Regino of Prüm (Latin: Regino Prumiensis, German: Regino von Prüm; died 915) was a Benedictine churchman, who served as abbot of Prüm (892--99) and later of Saint Martin's at Trier, and chronicler, whose Chronicon is an important source for late Carolingian history.
abbot