the name of a goddess; a name held by a prince or king; and, perhaps a place name (see attestations)
"...qujlvia, intla oqujchtli. Ma itech ximaxiti in monantzin in chalchivitl icue, in chalchiuhtlatonac" = "...she would say, “My son, approach your mother, the goddess of water called Chalchiuhtlicue or Chalchiuhtlatonac" (Here, tlatonac is attached to the stem for jade or precious greenstone, chalchihuitl.)
"According to Brasseur's authorities one of the princes of Chicomoztoc, named Chalchiuh Tlatonac, was induced to depart with the Aztecs, assuming a rank second only to that of the high priest Huitziton." The index to this book also indicates that Chalchiuh Tlatonac was a "king" of the Toltecs and a "king" of the Culhua.