Adalbert, Duke of Lorraine

Adalbert (c. 1000–1048) was the eldest son of Gerhard, Count of Metz. When Godfrey of Upper Lorraine rebelled against Emperor Henry III and was defeated, the emperor installed Adalbert as duke of Upper Lorraine in 1047.

Godfrey continued the war, however, and on 11 November 1048 Adalbert was killed fighting him at the Battle of Thuin. He left no son, and Henry III at once named his brother Gerhard duke in his stead.