The Count of Vexin was a title held by noble families in the region of Vexin, located in northern France. This area was strategically important during the medieval period due to its proximity to both the Seine River and the royal domain of Paris. The title was often associated with the control of land and resources, influencing local politics and power dynamics. Throughout history, various counts ruled Vexin, including members of the House of Capet and the House of Normandy. The title played a significant role in the feudal system, where loyalty and land ownership were crucial for maintaining power. The region's significance diminished over time, but it remains a notable part of French history.