Tezozomoc Yacateteltetl

Tezozomoc Yacateteltetl (c. 1320–1426) ruled the Tepanec city-state of Azcapotzalco from around 1370 until his death and built it into the dominant power in the Valley of Mexico. A son of King Acolnahuacatl and Cuetlaxochitzin, he set his own sons on the thrones of neighbouring cities.

In 1403 he approved the election of Tenochtitlan's king Huitzilihuitl and gave him his daughter Ayauhcihuatl in marriage, over his son Maxtla's opposition. Defeated by Texcoco's ruler, he made peace but later defeated its new ruler in 1419 and seized the city.

A colonial chronicler called him a cruel tyrant, so old that he was carried about swaddled in feathers and slept between two braziers. After he died in 1426 his son Tayatzin succeeded him, but Maxtla seized power.