According to Nicolas Viton of Saint-Allais, he succeeded, in 1027, his nephew Eberhard VI, who had died childless.
In the same year Ernest II, Duke of Swabia, rebelled against his stepfather, the Salic emperor Conrad II, and Hugh's lands and castles in Alsace were devastated and plundered, before he was forced to surrender and was imprisoned.
[2] He founded the Abbey of Hesse, to honour Blessed Bishop Martin,[3] near Sarrebourg, whose privileges were confirmed by his son, Pope Leo IX in 1050.
[4] In Altdorf, Hugh had a monastery dedicated to the martyr Cyriacus.
Hugh IV married Hedwig of Dabo,[1] daughter and heiress of Louis, Count of Dachsbourg.