Moctezuma I (c. 1398-1469), also known as Moteuczomatzin Ilhuicamina (modern Nahuatl pronunciation (help·info)), Huehuemoteuczoma or Montezuma I (Classical Nahuatl: Motēuczōma Ilhuicamīna [moteːkʷˈsoːma ilwikaˈmiːna], Classical Nahuatl: Huēhuemotēuczōma [weːwemoteːkʷˈsoːma]), 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, and he ruled over a period of peace from 1440 to 1453. Moctezuma brought social, economical, and political reform to strengthen Aztec rule, and Tenochititlan benefited from relations with other tribes.
Moctezuma was the son of emperor Huitzilihuitl (meaning "Hummingbird Feather") and queen Miahuaxihuitl. He was a brother of Chimalpopoca, Tlacaelel I, and Huehue Zaca. He was the grandson of the first ruler of Tenochtitlan. His name meant “he is angry like a lord” (from the root “tēuc-” [lord] combined with the reflexive verb “mo/zōma” [becomes angry]).