a person who is good of heart, sincere; a holy man (see Molina)
Orthographic Variants:
qualli yyullo, qualli iyollo
Alonso de Molina:
qualli yyullo. hombre de buen corazon sincero y sin doblez, o hombre sancto. Alonso de Molina, Vocabulario en lengua castellana y mexicana y mexicana y castellana, 1571, part 2, Nahuatl to Spanish, f. 84v. col. 2. Thanks to Joe Campbell for providing the transcription.