Wikipedia
In Aztec mythology, Tlazolteotl (or Tlaçolteotl, ) is a goddess of purification, steam bath, midwives, filth, and a patroness of adulterers. In Nahuatl, the word tlazolli can refer to vice and diseases. Thus, Tlazolteotl was a goddess of filth (sin), vice, and sexual misdeeds. However, she was a purification goddess as well, who forgave sins and cured diseases caused by misdeeds, particularly sexual misdeeds. Her dual nature is seen in her epithets; Tlaelquani ('she who eats filth [sin]') and Tlazolmiquiztli ('the death caused by lust'), and Ixcuina or Ixcuinan ('she of two faces'). Under the designation of Ixcuinan she was thought to be plural in number and four sisters of different ages by the names Tiacapan (the first born), Teicu (the younger sister), Tlaco (the middle sister) and Xocotzin (the youngest sister).
Her son was Centeotl and she was also known as Toci. She presides over the 13th trecena of the sacred 260-day year. Another son is Yum-Kax, the Maya maize god.