Paralus was a historical settlement located at one of the seven mouths of the Nile, Egypt known as Paralus or Sebennys. During Byzantine times it was located in the province of Ægyptus Secunda. The place, mentioned in the Notitia Episcopatuum, has been abandoned and is now covered with the waters of Lake Burullus.
The bishopric of Paralus is included in the Catholic Church's list titular sees.
References
Paralus (place) Wikipedia(Text) CC BY-SA