title: Sisillius
text: # Sisillius
  
  Sisillius (Welsh: Saessyllt) was the name of three legendary Kings of the Britons as accounted by Geoffrey of Monmouth:
  
  * Sisillius, one of the younger sons of Ebraucus
  * Sisillius I, successor of King Gurgustius
  * Sisillius II, son of King Guithelin and Queen Marcia
  * Sisillius III, successor of King Oenus
  