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| | CATHOLIC ENCYCLOPEDIA: Lorraine |
 | | Trier obtained its temporal power in 898, under Radbod, through Duke Zuentebulch of Lorraine; Bruno, Archbishop of Cologne (953-65), himself obtained the dignity of Duke of Lorraine. |
 | | About 811 Trier became an archbishopric, the episcopal Sees of Metz, Toul, and Verdun being suffragan to it. |
 | | In these ecclesiastical abodes and in the bishops' residences celebrated schools flourished, among which St. Mathias near Trier, the Abbey of Prüm, famous for the historian Regino, and Verdun with its Bertarius attained great prominence. |
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