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Philip III, immediately after the request in the reign of his uncle Charles I and the Muslim leader talks to end the Eastern Campaign, and he was returned to France. Result the Crusaders and the Muslims signed a 10-year truce. August 12, 1271, Philip III officially crowned King of France. Another uncle near Toulouse, Count Philip Alphonse's death, because he did not have heirs, Philip acquired most of his territory. These new territories to the royal family's power was greatly expanded.
1. Louis (not live to adulthood)
In Isabella after the death of Philip III on August 21, 1274 married again, the object is the Duke of Brabant Henry III's daughter, Maria. They had the following children:
3. France's Marguerite