House of Lorraine

The House of Lorraine (German: Haus Lothringen) originated as a cadet branch of the House of Metz. It inherited the Duchy of Lorraine in 1473 after the death of duke Nicholas I without a male heir. By the marriage of Francis of Lorraine to Maria Theresa in 1736, and with the success in the ensuing War of the Austrian Succession, the House of Lorraine was joined to the House of Habsburg, and was now known as Habsburg-Lorraine (German: Habsburg-Lothringen). Francis, his sons Joseph II and Leopold II, and grandson Francis II were the last four Holy Roman Emperors from 1745 to the dissolution of the empire in 1806. Habsburg-Lorraine inherited the Habsburg Empire, ruling the Austrian Empire and Austria-Hungary until the dissolution of the monarchy in 1918.

Although its senior agnates are the Dukes of Hohenberg, the house is currently headed by Karl Habsburg-Lothringen (born 1961), oldest grandson of the last emperor Charles I.[1]
The house claims descent from Gerard I of Paris (Count of Paris) (died 779) whose immediate descendants are known as the Girardides. The Matfridings of the 10th century are thought to have been a branch of the family;[2] at the turn of the 10th century they were Counts of Metz and ruled a set of lordships in Alsace and Lorraine. The Renaissance dukes of Lorraine tended to arrogate to themselves claims to Carolingian ancestry, as illustrated by Alexandre Dumas, père in the novel La Dame de Monsoreau (1846);[3] in fact, so little documentation survives on the early generations that the reconstruction of a family tree for progenitors of the House of Alsace involves a good deal of guesswork.[2]

What is more securely demonstrated is that in 1048 Emperor Henry III gave the Duchy of Upper Lorraine first to Adalbert of Metz and then to his brother Gerard whose successors (collectively known as the House of Alsace or the House of Châtenois) retained the duchy until the death of Charles the Bold in 1431.[4]