Francis I, Holy Roman Emperor
Élisabeth Charlotte d'Orléans (13 September 1676 – 23 December 1744) was a "petite-fille de France", and duchess of Lorraine and Bar by marriage to Leopold, Duke of Lorraine. She was regent of Lorraine and Bar during the minority (1729–1730) and absence of her son (1730–1737), and "suo jure" Princess of Commercy 1737–1744. Among her children was Francis I, Holy Roman Emperor, a co-founder (and patrilineal agnatic ancestor) of the royal House of Habsburg-Lorraine.