After the War of the Polish Succession in 1737, the Duchy of Upper Lorraine, of which Nancy was the capital, was given to Stanislaus I Leszczyński ( in Polish,  in French), former King of Poland and father-in-law to King Louis XV of France.
Following the War of the Polish Succession in 1737, the Duchy of Upper Lorraine, with Nancy as its administrative center, was given to Stanislaus I Leszczyński (in Polish, in French), a former ruler of Poland and father-in-law to King Louis XV of France.