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Bruno II (1024-1057) was a Frisian count or margrave in the 11th century ruling Middle-Friesland. He belonged to the Brunonen family. In 1038 he succeeded his father Liudolf, Margrave of Frisia. His mother was Gertrude the daughter of Count Hugo and brother of Pope Leo IX. When he was killed in 1057 in an encounter with Otto, Margrave of the Nordmark, he was succeeded by his brother Egbert.