The Tepanecs or Tepaneca are a Mesoamerican people who arrived in the Valley of Mexico in the late 12th or early 13th centuries. The Tepanec were a sister culture of the Aztecs (or Mexica) as well as the Acolhua and others -- these tribes spoke the Nahuatl language and shared the same general pantheon, with local and tribal variations. Welcomed to the Valley of Mexico by Xolotl, the Tepanecs settled on the west shores of Lake Texcoco. Under their tlatoani, Acolnahuacatl, the Tepanec took over A… (More on Tepanec)