Frederick II, Duke of Lorraine

Frederick II (c. 1165–1213), son of Frederick I and Ludmilla of Poland, reunited Lorraine in 1205–1206, when his uncle Simon II abdicated and his father died, ending the division made at Ribemont in 1179.

His 1188 marriage to Agnes of Bar brought him several fiefs, but he joined the bishop of Metz against her father, Count Theobald I. The count seized Prény and Frederick was captured in 1208.

In the German succession he switched backing from Philip of Swabia to Otto IV and then Frederick of Hohenstaufen. In 1213 he defeated an Alsatian lord and died on 10 October.