Elizabeth de Vermandois was a notable figure in the 12th century, known for her noble lineage as the daughter of Hugh de Vermandois, a prominent French nobleman. She was married to William the Conqueror's son, Robert Curthose, which connected her to the English royal family. Her life was marked by the political alliances of her time, as marriages among nobility were often used to strengthen ties between powerful families. Elizabeth's heritage and marriage played a significant role in the dynamics of medieval European politics.