– 19/20 September 1212/1213) was the ruling Countess of Clermont-en-Beauvaisis in her own right in 1191-1213.
Catherine was the eldest child of Raoul I, Count of Clermont-en-Beauvaisis and his wife, Countess Alix.
[1] Catherine’s brother Philippe died before Raoul, and Catherine became the Countess of Clermont-en-Beauvaisis after her father’s death.
The husband of Catherine was Louis I, Count of Blois, a grandson of the King of France.
[2] Catherine bore three children to her husband; one of them was Theobald VI, Count of Blois.