[3] Although he repeatedly challenged the decision, her rights to the county were consistently upheld by the Parlement of Paris and the royal court.

When Joan II married the future Philip V of France in 1307, Mahaut continued to rule the domains of her absent daughter until 1315.

Mahaut's daughters Joan II and Blanche, along with their cousin Margaret of Burgundy, all future queens of France, were implicated in the Tour de Nesle affair.

Mahaut is a major character in Les Rois maudits (The Accursed Kings), a series of historical novels by Maurice Druon.

Allan Massie wrote in The Wall Street Journal, "Few figures in literature are as terrible as the Countess Mahaut, murderer and maker of kings.