Matthias I, Duke of Lorraine

Matthias I (c. 1119–1176), eldest son of Simon I, ruled Upper Lorraine from 1138, when he married Judith, sister of Frederick Barbarossa, binding his house to the Hohenstaufen.

Like his forefathers he supported the German emperors, accompanying Barbarossa to his coronation in Rome in 1155 and serving in his wars against the papacy and neighbouring kings. He enlarged the ducal demesne at the expense of the bishop of Toul while founding churches and abbeys, and died in 1176.