Stephen Henry was the Count of Blois and Count of Chartres. He led an army during the First Crusade, was at the surrender of the city of Nicaea, and directed the siege of Antioch. Returning home without fulfilling his crusader vows, Stephen joined the crusade of 1101. Making his way to Jerusalem, he fought in the Second Battle of Ramla, where he was captured and later executed.

During the Middle Ages, the counts of Blois were among the most powerful vassals of the King of France.