This man's full name was don Domingo Ixteocalletzin. He was son of a Chichimec lord, Miccacalcatl, who ruled Tequanipan Amaquemecan Chalco. Miccacalcatl claimed as his great grandfather the ruler Huitzilihuitl (all according to Chimalpahin). These genealogies link pre-contact with Spanish colonial times. (central Mexico, seventeenth century)
This person drew his name from a deity named Ixteucale (spelled variously), who was a companion of Huitzilopochtli. See Fr. Bernardino de Sahagún, Florentine Codex: General History of the Things of New Spain; Book 2 -- The Ceremonies, No. 14, Part III, 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), 73.