Maria Clementina Sobieska

Maria Clementina Sobieska was a Polish noblewoman, the granddaughter of the Polish king John III Sobieski, and wife of James Francis Edward Stuart, Jacobite pretender to the British throne.

She was born onJuly 1702 in Ohlau, Silesia, Holy Roman Empire. Her parents were James Louis Sobieski , the eldest son of King John III, and Countess Palatine Hedwig Elisabeth of Neuburg . Her older sister Maria Karolina was the Duchess of Bouillon by marriage.

Source: Wikipedia