Diane was also thought to have been a mistress of Louis XIV and a member of the Order of the Honey Bee.

Diane was also mentioned occasionally in the Memoirs of the Duc de Saint-Simon.

Louis de Rouvroy, duc de Saint-Simon once wrote how Diane often outshone her sisters: On December 14, 1670, Diane married into the family of Mancini-Mazarini, via Philippe Jules Mancini, a nephew of Cardinal Mazarin.

Although the relationship was rocky,[6] the death of her spouse still managed to affect her deeply in a way.

Finally, on January 11, 1715, aged 58, Diane died peacefully in Paris, France.