Cipac.

Headword: 
Cipac.
Principal English Translation: 

a person's name, shortened from cipactli ("Crocodile" or "Dragon"); a calendrical name; attested male in Mexico City in the second half of the sixteenth century and female in Cuernavaca and Tepetlaoztoc

Attestations from sources in English: 

ytoca çipac = named Cipac (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), 158–159.

jua. cipac (Tepetlaoztoc, sixteenth century)
Barbara J. Williams and H. R. Harvey, The Códice de Santa María Asunción: Facsimile and Commentary: Households and Lands in Sixteenth-Century Tepetlaoztoc (Salt Lake City: University of Utah Press, 1997), 79.

Marcos, Marcos Cipac, and Marcos Tlacuilol (seemingly the same person, and a painter who was painting boards to hang in the marketplace) are all named in the Annals of Juan Bautista. (ca. 1582, México)
Luis Reyes García, ¿Como te confundes? ¿Acaso no somos conquistados? Anales de Juan Bautista (Mexico: Centro de Investigaciones y Estudios Superiores en Antropología Social, Biblioteca Lorenzo Boturini Insigne y Nacional Basílica de Guadalupe, 2001), 205, note 94.

Don Luis de Santa María Cipac (or Nanacacipactzin) is said to have been a governor of Mexico City, ca. 1536–1565. He appears on the Codex Reese (ca. 1565) or "Beinecke Map" that is held in the Beinecke Library at Yale University.
See the library's webpage about the codex. https://brbl-dl.library.yale.edu/vufind/Record/3600017?image_id=1114791

Attestations from sources in Spanish: 

Nica toxiuhal 10 acatl, hamdres cipac alguacil = Aquí, nuestro año 10 acatl. Andrés Cipac, alguacil. (Tetzcoco, 1587)
Benjamin Daniel Johnson, “Transcripción de los documentos Nahuas de Tezcoco en los Papeles de la Embajada Americana resguardados en el Archivo Histórico de la Biblioteca Nacional de Antropología e Historia de México”, en Documentos nahuas de Tezcoco, Vol. 1, ed. Javier Eduardo Ramírez López (Texcoco: Diócesis de Texcoco, 2018), 126–127.