Berengar II of Sulzbach

Count Berengar II of Sulzbach , sometimes known as Berengar I of Sulzbach, was Count of Sulzbach in Bavaria. Berengar was a leader of the reform party. He sided with Pope Gregory VII during the Investiture Controversy in opposition to Henry IV, Holy Roman Emperor, and supported Henry V in his successful rebellion against his father. He is known as the founder of several abbeys.

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Source: Wikipedia