Who was Francis Stephen of Lorraine, Maria Theresa’s husband?

Francis Stephen of Lorraine, known as Francis I, was the husband of Maria Theresa and served as Holy Roman emperor from 1745 until his death in 1765.1

Born in Nancy, he was the Duke of Lorraine from 1729 to 1735 before becoming the grand duke of Tuscany in 1737. His marriage to Maria Theresa in 1736 required him to cede his ancestral lands in Lorraine to Stanisław Leszczyński as part of the settlement ending the War of the Polish Succession.1

Although he was appointed coregent by his wife, Francis was largely overshadowed by her strong personality and had little influence on government affairs, save for his contributions to economic matters and his cultural interests. Despite his nominal rank, he was often kept from military command during the War of the Austrian Succession because Maria Theresa feared for his safety.1