Background
She was the second daughter of Hugh IV, Duke of Burgundy and his second wife Beatrice of Navarre. He was born in 1266 to the later Robert III of Flanders and his first wife Blanche of Sicily.
She was the second daughter of Hugh IV, Duke of Burgundy and his second wife Beatrice of Navarre. He was born in 1266 to the later Robert III of Flanders and his first wife Blanche of Sicily.
Isabella was betrothed in 1272 to Charles of Flandres. Her betrothed died in 1277. On 6 February 1284, Isabella married Rudolf I of Germany.
The bride was fourteen years old and the groom almost sixty-six.
Their marriage remained childless. Rudolph died on 15 July 1291.
He was succeeded as Duke of Austria by his co-ruling sons Albert I and Rudolph World War II She returned to the Court of Burgundy and was granted the title of Lady of Vieux-Château on 20 November 1294. She had a second marriage to Pierre IX de Chambly, Lord of Neaufles who died c.