Description
Matthias I (1119 – 13 May 1176) was the duke of Lorraine from 1138 to his death as the eldest son and successor of Simon I and Adelaide . Like his forefathers going back to Theodoric II and even to Adalbert , he was a stern supporter of the king of Germany and Holy Roman Emperor . He married Bertha (sometimes called Judith), daughter of Frederick II, Duke of Swabia , and therefore niece of the Hohenstaufen king Conrad III and sister of Frederick Barbarossa , future emperor.
He accompanied Barbarossa on a number of important occasions, including his imperial coronation by Pope Adrian IV in Rome , 1155. He assisted the emperor in his wars against Adrian and his successor Alexander III and the kings of France and Sicily . He extended his own ducal demesne at the expense of the bishop of Toul , but was an important donor to the Church and founder of abbeys. He died in 1176 and was interred in his abbey of Clairlieu in Villers-lès-Nancy .