Moctezuma I, also known as Montezuma I, Moteuczomatzin Ilhuicamina or Huehuemoteuczoma, was the second Aztec emperor and fifth king of Tenochtitlan. During his reign, the Aztec Empire was consolidated, major expansion was undertaken, and Tenochtitlan started becoming the dominant partner of the Aztec Triple Alliance. Often mistaken for his popular descendant, Moctezuma II, Moctezuma I greatly contributed to the famed Aztec Empire that thrived until Spanish arrival. He ruled over a period of peace from 1440 to 1453. Moctezuma brought social, economical, and political reform to strengthen Aztec rule, and Tenochtitlan benefited from relations with other cities.