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In page Blanche of Burgundy:

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Acting quickly, King Philip ordered the arrest of all his daughters-in-law and the knights. Following torture, the d'Aunays confessed to adultery and admitted that it had lasted three years.[1][2] Blanche and Margaret were tried before the Paris Parlement and were found guilty of adultery. Their heads were shaven and both were sentenced to life imprisonment underground in Château Gaillard, while the d'Aunays were condemned to death and duly executed.[3] Blanche's first child, a son named Philip, was born around 5 January 1314,[4] so presumably his paternity was not challenged; her second child, a daughter named Joan, was born in 1315 after the trial.[citation needed] Despite her disgrace, Blanche remained in contact with her ambitious mother and often received gifts from her.