He was also lord of a large domain based originally in Baelen-sur-Vesdre, which in later generations was called the Duchy of Limburg, with his seat in the fortified town of Limbourg-sur-Vesdre.
Because of the rebellion of Godfrey, Henry III appointed Frederick, a relative of the reigning duke of Upper Lorraine, Adalbert.
With the aid of Adalbero III, Bishop of Metz, his brother, Frederick imposed his authority in the duchy and made war on the continuing rebel Godfrey.
He died in war with Anno II, Archbishop of Cologne, after which King Henry IV gave the duchy to Godfrey.
[3] His second wife (1055) was Ida (died 1102), daughter of Bernard II, Duke of Saxony, who remarried Albert III, Count of Namur, on Frederick's death.