Countess Matilda of Ponthieu was a noblewoman born around 1071 in Ponthieu, a region in northern France. She was the daughter of Hugh II of Ponthieu and Adelaide of Normandy. Matilda became known for her strong leadership and played a significant role in the politics of her time, particularly in the Norman and Anglo-Norman contexts. Matilda married Stephen of Blois, which strengthened ties between their families. She was also the mother of several children, including Stephen of England, who later became king. Matilda's influence extended beyond her lifetime, as her descendants continued to shape the history of England and France.