Philip IV of France and his family: l-r: his sons, Charles IV of France and Philip V of France, his daughter Isabella of France (wife of Edward II of England), himself, his eldest son and heir the King of Navarre, Louis X of France, and his brother, Charles of Valois.

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The Tour de Nesle Affair was a scandal amongst the French royal family in 1314, during which the three daughters-in-law of King Philip IV of France were accused of adultery, the accusations apparently started by Philip’s only daughter, Isabella. The Tour de Nesle was the name of the tower in Paris where much of the adultery was said to have occurred.