Tayatzin was a king of Tepanec city of Azcapotzalco in Mexico.
His half-siblings were kings Quaquapitzahuac and Maxtla and queen Xiuhcanahualtzin.
[2] Chimalpopoca allied with Tayatzin, and the two conspired to retake the throne.
Friendly relations between Tenochtitlan and Azcapotzalco were thus replaced by insults and violent intrigue.
Tayatzin was killed, and Chimalpopoca decided to offer himself as a sacrifice at the altar of his father Huitzilíhuitl.