a mountain (volcano) near Tlaxcala, named for the goddess of ground waters (rivers and lakes) or feminine waters (as opposed to celestial waters, governed by Tlaloc); as such, she is related to Chalchiuhtlicue (Jade Skirt) the goddess of this type that is represented in the Codex Borgia; the mountain is also known as Malintzin and Malinche today (see attestations)
The Tepexic Annals pair this volcano/goddess, Matlalcueye, with the hoary old man volcano, Poyauhtecatl (the Orizaba volcano), much as Iztaccihuatl (female) is paired with Popocatepetl (male).
quihualquixtique setetl probiçio real yn itechpa yn quahtlali Matlalcueyetzin ynic mochi ye quimocuilia caxtilteca ynic ye mochi quitlaça quahuitl quitlacaquitizque ynic aocmo mopiquizque quimocuilizque tlali quahuitl = Sacaron para acá, una provisión real, en relación a las tierras boscosas del Matlalcueye, que todas ya se las toman para sí los castellanos, por lo cual ya tumban los árboles. Les comunicarán que ya no inventarán tomar para sí la tierra y los árboles.(Tlaxcala, 1662–1692)