Was Charles IX the last monarch from the House of Valois?
Yes
No, he was penultimate
No, he was the first
No, he was the third
Answer
No, Charles IX was not the last monarch from the House of Valois. He was the penultimate, as he was followed by his brother, Henry III. Henry III was the last Valois king of France, as he was succeeded by his cousin, Henry IV, who was from the House of Bourbon.
The Reign of Charles IX: Unraveling the Legacy of a Controversial French King