Tzontemoctzin.

Headword: 
Tzontemoctzin.
Principal English Translation: 

a personal name; the name of a ruler of Huexotla (Huejutla)

(central Mexico, sixteenth century)
Fr. Bernardino de Sahagún, Florentine Codex: General History of the Things of New Spain; Book 8 -- Kings and Lords, no. 14, Part IX, eds. and transl. Arthur J. O. Anderson and Charles E. Dibble (Santa Fe and Salt Lake City: School of American Research and the University of Utah, 1951), 14.

grandson of Huitzilihuitl, son of Huehue Zaca; this Tzontemoc was tlacateccatl in the time of Axayacatzin and Ahuitzotzin; he bore a son named Yaopaintzin

(central Mexico, seventeenth century)
Codex Chimalpahin: Society and Politics in Mexico Tenochtitlan, Tlatelolco, Culhuacan, and Other Nahuatl Altepetl in Central Mexico; The Nahuatl and Spanish Annals and Accounts Collected and Recorded by don Domingo de San Antón Muñón Chimalpahin Quauhtlehuanitzin, eds. and transl. Arthur J. O. Anderson and Susan Schroeder (Norman: University of Oklahoma Press, 1997), vol. 2, 94–95, 96–97.

Orthographic Variants: 
Tzontemoc
Attestations from sources in English: 

Injc matlactli tlatoanj, itoca tzontemoctzin: in tlatocat caxtolxiujtl = The tenth ruler was named Tzontemoctzin. He ruled fifteen years. (central Mexico, sixteenth century)
Fr. Bernardino de Sahagún, Florentine Codex: General History of the Things of New Spain; Book 8 -- Kings and Lords, no. 14, Part IX, eds. and transl. Arthur J. O. Anderson and Charles E. Dibble (Santa Fe and Salt Lake City: School of American Research and the University of Utah, 1951), 14.

Attestations from sources in Spanish: 

Tzontemoctzin: "El que baja la cabeza", es decir, el Sol del poniente. Las pinturas son bastante expresivas: una cabeza sobre la cumbre de un cerro está a punto de precipitarse por la cuesta este; la huella indica el rumbo, sobre todo en el Florentino Víctor M. Castillo F., "Relación Tepepulca de los señores de México Tenochtitlan y de Acolhuacan," Estudios de Cultura Náhuatl 11 (1974), 183–225, y ver la pág. 193.