The royal consorts of the rulers of the Lorraine region have held varying titles, over a region that has varied in scope 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.
The House of Habsburg-Lorraine continued carrying the title as titular Dukes of Lorraine.
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