Henry and his brother Frederick accompanied their cousin Werner, Margrave of the Nordmark, and "other excellent warriors" in their abduction of Liudgerdam from her fortress at Quedlinburg.
Werner was captured by the forces of the abbess, but apparently Henry and Fredrick were not charged.
[1] In 1004, Henry participated in an invasion of the "lands of the Milzeni" [it is not clear as to the identity of this tribe], in support of Jaromír, Duke of Bohemia.
Henry was vassal to Hemuzo, "a warrior noble in lineage and vigorous in manner" who was killed when half a millstone struck his helmeted head.
Upon his death, Henry was succeeded as Count of Walbeck by his brother Frederick.