Xiuhnel (MH651r)
This black-line drawing of the simplex glyph for the personal name Xiuhnel ("Incapable," "Morning Star," or "Cloud Serpent," attested here an a man's name) is attested here as a man's name. This is a clump of three sprigs of green herbs (one of the meanings of xihuitl), is bound with a twisted cord. The use of herbs for the "xiuh-" start to the name appears to be a phonetic indicator.
Stephanie Wood
At first glance the name Xiuhnel appears to be a compound of xihuitl (turquoise) and nelli (true). James Lockhart suggests that -nel-, when in combinations, could lose that meaning, as noted in the OND under the term nelli. According to popular belief, Xiuhnel and Mimich were two of hundreds of Cloud Serpents associated with hunting, promiscuity, and drunkenness. See The Fate of Earthly Things by Molly H. Bassett (2015, 175). The translators of the Primeros Memoriales say that Xiuhnel and Mimich were prominent figures in many migration stories of central Mexican cultures. See the Sullivan and Nicholson edition of the PM (1997, 135). Some also say Xiuhnel is the morning star. If so, then the rectangular shapes in some Xiuhnel glyphs may relate to that. But there is also a xiuhnel meaning "incapable," according to A. Wimmer (2004) (included in the Gran Diccionario Náhuatl).
Stephanie Wood
diego xiuhnel
Diego Xiuhnel
Stephanie Wood
1560
Jeff Haskett-Wood
plantas, hierbas, xihuitl, nombres de gobernadores, Chichimecas, estrellas, serpientes de nubes, nombres de hombres

Xiuhnel, the Morning Star, a Cloud Serpent, and a Chichimec ruler, https://nahuatl.wired-humanities.org/content/xiuhnel
xihu(itl), green herbs, https://nahuatl.wired-humanities.org/content/xihuitl-0
nel, a secondary particle with many meanings, https://nahuatl.wired-humanities.org/content/nel
La Estrella de la Mañana, o La Serpiente de las Nubes, on Gobernante Chichimeca (?)
Stephanie Wood
Matrícula de Huexotzinco, folio 651r, World Digital Library, https://www.loc.gov/resource/gdcwdl.wdl_15282/?sp=384&st=image
This manuscript is hosted by the Library of Congress and the World Digital Library; used here with the Creative Commons, “Attribution-NonCommercial-ShareAlike 3.0 License” (CC-BY-NC-SAq 3.0).
