Born Acolmiztli, he was the son of Ixtlilxochitl I and Matlalcihuatzin, the daughter of Huitzilihuitl. Though born heir to a throne, his youth was not marked by princely luxury. His father had set Texcoco against the powerful city of Azcapotzalco, ruled by the Tepanec. In 1418, when the young prince was fifteen, his father was assassinated.
