Their only daughter and heir Jacqueline was born in Paris on 16 February 1541 and grew up in the Louvre until she was six. When Francis I died in 1547 his widow Eleanor took refuge in the Spanish Netherlands, home of her sister Mary of Hungary. Béatrix and Jacqueline went with her and Jacqueline remained in the royal court in Brussels until she was sixteen, at which age she was chosen to be maid of honour to princess Marguerite of France (1523-1574), Henry II's sister and future duchess of Savoy via her marriage to Emmanuel-Philibert de Savoie. Jacqueline thus returned to the Louvre in 1557, whilst her mother moved to the château de Saint-André at Briord in Bugey. The Duke of Savoy beat the French at the battle of Saint-Quentin in 1557 and two years later the treaties of Cateau-Cambrésis agreed to the gradual evacuation of the French occupation forces from Savoy and Piedmont. However, he had to fight hard to defend his territories from incursions by Protestant forces from Geneva and by French forces which still held certain strategic positions. He recalled the Savoyard noblemen who had been in the French court for the last twenty-five years and gave them posts in his new army and government. He also forbade Savoyard noblewomen from marrying foreigners or Protestants, so that estates of Savoy remained in Savoy's hands. His biggest prize was the comte de Montbel (they had a family connection and the duke had been baptised in the arms of the count's paternal great aunt in 1528) and the duke demanded that he come to court for the duke to present him with the collar of the Supreme Order of the Most Holy Annunciation. However, he placed two conditions on its presentation - "when she reaches marriageable age, Jacqueline must marry a Savoyard lord of identical rank and of Catholic religion. The safety of the States of Savoy is at stake." The French court became a battleground between Protestant and Catholic factions until 30 June 1559, when Henry II of France died of wounds incurred at a joust he had organised in honour of his sister Marguerite's marriage to Emmanuel-Philibert, Duke of Savoy. Henry's son Francis II of France succeeded him and his wife Mary became queen consort. Francis entrusted ruling the kingdom to princes of the House of Guise, accelerating the French Wars of Religion.