tiacapan.

teyacapan = First born, a name for girls (Central Mexico, sixteenth century)
Fray Bernardino de Sahagún, Primeros Memoriales, ed. Thelma D. Sullivan, et al. (Norman: University of Oklahoma Press, 1997), 254.

ytoca teyacapa = named Teyacapan (Cuernavaca region, ca. 1540s)
The Book of Tributes: Early Sixteenth-Century Nahuatl Censuses from Morelos, ed. and transl. S. L. Cline, (Los Angeles: UCLA Latin American Center Publications, 1993), 118–119.

in cioatzintli, in at amotlacoieoauh, in at amotiacapan, in at noҫo amoxocoiouh = the little woman who is perhaps your second child, perhaps your eldest, or perhaps your youngest (central Mexico, sixteenth century)
Fr. Bernardino de Sahagún, Florentine Codex: General History of the Things of New Spain; Book 6 -- Rhetoric and Moral Philosophy, No. 14, Part 7, 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, 1961), 153.

Women's birth order names seem to relate from beliefs about female deities or goddesses linked to Tlazolteotl (also known as Ixcuina), who loved luxury and was lustful. The four sisters were Tiacapan (the oldest sister), then Teicu (the second oldest), the third was Tlaco (middle sister), and the youngest was Xoco, or "Xocutzin." Many girls bore these names. (central Mexico, sixteenth century)
Fr. Bernardino de Sahagún, Florentine Codex: General History of the Things of New Spain; Book 1 -- The Gods; No. 14, Part 2, 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, 1950), 8.