Tehuantepec.

Headword: 
Tehuantepec.
Principal English Translation: 

a province south of central Mexico, in what is now Oaxaca (see Sahagún)

Orthographic Variants: 
Tequantepec, Tecuantepec, Teuantepec
Attestations from sources in English: 

ioan tequantepec tlatoanj = and the ruler of Tehuantepec (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), 65.