Agesilaus II
Many historians cite Cleombrotus as being a Pro-Theban Spartan (meaning he had pro-Theban tendencies) unlike his fellow king, Agesilaus II. He was blamed for the humiliating defeat at Leuctra by his contemporaries for being biased towards the enemy, though some modern historians do not believe that he was actually pro-Theban. He was the first Spartan king to die in battle since Leonidas at the Battle of Thermopylae.