John, King of England Normandy and Anjou until 1259, but John's continental losses and the consequent growth of Capetian power in the 13th century proved to mark a "turning point in European history". John's first wife, Isabel, Countess of Gloucester, was released from imprisonment in 1214; she remarried twice, and died in 1217. John's second wife, Isabella of Angoulême, left England for Angoulême soon after the king's death; she became a powerful regional leader, but largely abandoned the children she had had by John. John had five legitimate children, all by Isabella. His eldest son, Henry III, ruled as King of England for the
Isabella of France, Dauphine of Viennois of Burgundy. In 1316, her father became the King of France. The same year, her marriage with Guigues VIII of Viennois was contracted. In 1322, however, her young father died, which devastated the family. Although Isabella was still in grief, she was married in 1323, when she was just 11 years old. Guigues was killed while besieging the Savoyard castle of Perrière in 1333. He left the Dauphiné to his brother Humbert II. He was buried in Saint-André in Grenoble. In 1335, Isabella married John III, Lord of Faucogney. She was widowed a second a time as John died in