The House of Crépy was a noble family in medieval France, known for its influence and connections to the French monarchy. It originated in the 10th century and played a significant role in the politics of the region, particularly during the Capetian dynasty. Members of the house often held important titles and lands, contributing to the feudal system of the time. The family is most notably linked to the Crépy-en-Valois, a town that served as a center of power for the house. Over the years, the House of Crépy produced several notable figures, including counts and dukes, who were involved in various conflicts and alliances that shaped French history.