an ethnic group, the Tepanecs; arrived in the Valley of Mexico in the late 12th or early 13th centuries; their leader, Acolnahuacatl, took over leadership of Azcapotzalco; their subsequent leader Tezozomoc of Azcapotzalco ruled at the height of their influence, especially extending it over such places as the Valley of Toluca and in Morelos (see attestations)
a person of the historical ethnic group in central Mexico (plural: tepaneca); one of the groups that migrated from the legendary Chicomoztoc and came to found the city of Azcapotzalco, which became their "imperial capital." which had influence particularly in the western and southern basin of Mexico and the valley of Toluca; but by 1519 they were already subordinated to the Aztec Triple Alliance
to establish boundaries, mark borders of a territory (sixteenth century, Quauhtinchan) Historia Tolteca-Chichimeca, eds. Paul Kirchhoff, Lina Odena Güemes, y Luis Reyes García (México: CISINAH, INAH-SEP, 1976), 199.