The kings and dukes of Lorraine have held different posts under different governments over different regions, since its creation as the kingdom of Lotharingia by the Treaty of Prüm, in 855. The first rulers of the newly established region were kings of the Franks. The Latin construction "Lotharingia" evolved over time into "Lorraine" in French, "Lotharingen" in Dutch and "Lothringen" in German. After the Carolingian kingdom was absorbed into its neighbouring realms in the late ninth century, dukes were appointed over the territory. In the mid-tenth century, the duchy was divided into Lower Lorraine and Upper Lorraine, the first evolving into the historical Low Countries, the second became known as the Duchy of Lorraine and existed well into the modern era.
Charles the Bald claimed Lotharingia on Lothair's death and was crowned king in Metz, but his brother Louis the German opposed his claim and in 870 the Treaty of Mersen divided Lotharingia between the two brothers and subsequently their sons. In 880, the Treaty of Ribemont gave the whole of Lotharingia to Louis the Younger, son of Louis the German.
Charles the Bald (869–870), also king of West Francia and Italy, and Carolingian emperor
In 959, Lorraine was divided into two districts, Lower and Upper Lorraine, each governed by a margrave, under Bruno. Upon Bruno's death in 965, these two margraves were recognised as dukes of Lower and Upper Lorraine, respectively. The two duchies remained separate, following separate pathways, except for the period between 1033 and 1044.
Dukes of Lower Lorraine
Note that the numbering of the dukes varies between sources.
she was the daughter of Henry II; the estates of Lorraine eventually decided that she was not eligible to reign, and gave the crown to her uncle, Francis II; her husband and first cousin, Charles IV, would reign thereafter
nominally restored as a result of his brother's abdication; Lorraine was occupied by France, and the Duke in exile, from 1634 to 1661 and again from 1670 until his death
He was in exile and Lorraine was occupied by France until 30 October 1697, when it was returned to Léopold Joseph; it was again occupied by France from 1702 to 1714, although the duke remained in place