for someone to place him or herself above others and try to lead them; or, to serve as a town council officer or a president (see Molina)
Alonso de Molina:
topan tlatocati. enseñorearse alguno sobre nosotros, o ser nuestro regidor y presidente. Alonso de Molina, Vocabulario en lengua castellana y mexicana y mexicana y castellana, 1571, part 2, Nahuatl to Spanish, f. 150r. col. 1. Thanks to Joe Campbell for providing the transcription.