Background
Adalbero was the third son of Count Frederick of Luxembourg and a brother of Count Giselbert.
Bishop of Metz Catholic bishop
Adalbero was the third son of Count Frederick of Luxembourg and a brother of Count Giselbert.
He was a titular Count of Luxembourg and Bishop of Metz. He distinguished himself by his piety, his education, the prudent manner in which he administered his bishopric and his political influence. In 1049, Adalbero III was present at the meeting in Worms, organized by Emperor Henry III, where Bruno was elected as the imperial candidate to become Pope.
Later the people of Rome elected Bruno by acclamation, and he became Pope as Leo IX. Adalbero III was also present at the council in Rome in 1050 where Bishop Gerard of Toul was canonized.
Emperor Henry IV enfeoffed Adalbero with the County of Saarbrücken.