Tziuhtecatl.

a famous name; held by the leader of the merchants of Tlatelolco during the reign of Cuacuauhpitzahuac, and held by a lord of Colhuahcân who was a successor of Yohuallatônac; finally, according to Siméon, this is variant for the name Xiuhtecatl, someone who takes care of green herbs or turquoise

Gran Diccionario Nahuatl, citing the Florentine Codex (Book 9); the 3rd Relation of Chimalpahin; and Rémi Siméon; translation to English here by Stephanie Wood, https://gdn.iib.unam.mx/diccionario/tziuhtecatl/75330