There is no doubt that, at the time of the Pipil invasion, tribes of the Sumo-Misquito family were the immediate neighbours of the Pipils towards the east and north.
To the east of the three places whose names are compounded with " Nonohualco," must have dwelt, in the time of the Pipil Indians, the Nonoualca, called also by Mexican tribes Chontales or Popoloca.