On 25 January 1336 Isabella married Peter I, Duke of Bourbon, son of Louis I, Duke of Bourbon and Mary of Avesnes.
Peter and Isabella had only one son, Louis and seven daughters.
Her husband died at the Battle of Poitiers in 1356, and Isabella never remarried.
After her husband's death Isabella's son Louis became the Duke of Bourbon.
In the same year 1356, Isabella arranged for her daughter Joanna to marry Charles V of France; as he was at the time the Dauphin of France, Joanna duly became Dauphine.

Louis II, Duke of Bourbon, 1337-1410, became Duke of Bourbon in 1356 married Anne of Auvergne had issue.

Joanna of Bourbon, 1338-1378, married King Charles V of France, had issue.

Blanche of Bourbon, 1339-1361, married King Peter of Castile, she was murdered by him in 1361 and had no issue.

Bonne of Bourbon, 1341-1402, married Amadeus VI of Savoy, by whom she had issue.

Catherine of Bourbon, 1342-1427, married John VI of Harcourt
Margaret of Bourbon, 1344-1416, married Arnaud Amanieu, Lord of Albret, by whom she had issue.

Isabelle of Bourbon, 1345-1345, died young
Marie of Bourbon, 1347-1401, prioress of Poissy
She had as her butler Jean Saulnier, knight, lord of Thoury-on-Abron, councilor and chamberlain of the king, bailli of Saint-Pierre-le-Moûtier.

When she became a widow, she took the veil.
She died on 26 July 1383 at the age of seventy.
She was buried in Eglise des Frères Mineurs in Paris.
On 25 January 1336 Isabella married Peter I, Duke of Bourbon, son of Louis I, Duke of Bourbon and Mary of Avesnes. Peter and Isabella had only one son, Louis and seven daughters. Her husband died at the Battle of Poitiers in 1356, and Isabella never remarried. After her husband's death Isabella's son Louis became the Duke of Bourbon. In the same year 1356, Isabella arranged for her daughter Joanna to marry Charles V of France; as he was at the time the Dauphin of France, Joanna duly became Dauphine.
Louis II, Duke of Bourbon, 1337-1410, became Duke of Bourbon in 1356 married Anne of Auvergne had issue.
Joanna of Bourbon, 1338-1378, married King Charles V of France, had issue.
Blanche of Bourbon, 1339-1361, married King Peter of Castile, she was murdered by him in 1361 and had no issue.
Bonne of Bourbon, 1341-1402, married Amadeus VI of Savoy, by whom she had issue.
Catherine of Bourbon, 1342-1427, married John VI of Harcourt
Margaret of Bourbon, 1344-1416, married Arnaud Amanieu, Lord of Albret, by whom she had issue.
Isabelle of Bourbon, 1345-1345, died young
Marie of Bourbon, 1347-1401, prioress of Poissy
She had as her butler Jean Saulnier, knight, lord of Thoury-on-Abron, councilor and chamberlain of the king, bailli of Saint-Pierre-le-Moûtier.
When she became a widow, she took the veil. She died on 26 July 1383 at the age of seventy. She was buried in Eglise des Frères Mineurs in Paris.
Isabella of Valois, Duchess of Bourbon