Besides being the role of female actress Juliette Lewis in the Oliver Stone film "Natural Born Killers" there is more than one artist with this name (see links in the Wiki sources):
These are photos from concerts where Mallory Knox played, so they may be of other bands that played the concert as well.
Van's Warped Tour 2015 Jun 24, 2015 Albuquerque, New Mexico, United States Uploaded by Julie Raven
Takedown Festival Mar 7, 2015 Southampton, England, United Kingdom Uploaded by Heggitha
Mallory Knox / Sleeping With Sirens / Pierce the Veil / PVRIS Feb 28, 2015 Houston, Texas, United States Uploaded by Pixie Gates
Pierce the Veil / Sleeping With Sirens / PVRIS / Mallory Knox Feb 26, 2015 Orlando, Florida, United States Uploaded by Eli Vie
Mallory Knox / Pvris / Sleeping With Sirens / Pierce the Veil Feb 20, 2015 Richmond, Virginia, United States Uploaded by 24carfans
