From this source:
"It is certain, however, that the three daughters-in-law of Philip the Fair led a most scandalous life, and that the Tower of Nesle in Paris was the scene of their crimes. Having been found out, they were arrested and sent to prison."
Margaret of Burgundy, Queen of France, was one of the inhabitants of the Tower of Nesle (source):
Some historical tidbits about the French royal family, the Capets, can be found at an Internet forum here.
*Also a novel, The Tower of Nesle or the Queen's Intrigue, by Alexander Dumas, Henry Llewellyn Williams.