Tepanecapan

Tepanecapan was the land of the Tepanecs on the western shore of Lake Texcoco. In 1337 Acolnahuacatl ruled from Azcapotzalco, with Tenochtitlan and Tlacopan among his subjects.

Tezozomoc later extended Tepanec power across much of the Valley of Mexico. In 1419 his forces killed Ixtlilxochitl I of Texcoco and installed a client prince. After Tezozomoc died in 1426, his son Maxtla united enemies against him; in 1428 Tenochtitlan, Texcoco and Tlacopan destroyed Azcapotzalco, ending its supremacy.