Tezozómoc named one son heir; another son took the throne and killed him, and the cities he had ruled destroyed Azcapotzalco

This follows the Codex Xolotl and the colonial chronicles. Tezozómoc ruled Azcapotzalco for more than 50 years and made the lake cities pay tribute. In 1418 he had Ixtlilxóchitl, ruler of Texcoco, killed; the ruler's teenage son Nezahualcóyotl watched from a tree. Tezozómoc named his son Tayauh (Tayatzin) successor and died in 1426. Another son, Maxtla, took the throne. Tayauh met Chimalpopoca, ruler of Tenochtitlan, to plot against Maxtla. A dwarf servant of Maxtla, Tlatolton, overheard and told him. The chronicles say Maxtla stabbed Tayauh in his palace. Chimalpopoca was killed in 1427; one version says he was starved in prison, another that he was speared fleeing in a canoe. His successor Itzcóatl allied with Nezahualcóyotl. In 1428 the allies besieged and destroyed Azcapotzalco. One account says Nezahualcóyotl personally sacrificed Maxtla; others say Maxtla fled. After the war, which lasted to 1431, Tenochtitlan, Texcoco and Tlacopan formed the Triple Alliance that ruled central Mexico until 1521. The historian Isabel Bueno Bravo notes that Itzcóatl came from a branch that could not have ruled while Chimalpopoca's line lived, and that Itzcóatl, not Maxtla, may have ordered Chimalpopoca's death.