The Draco Normannicus is a chronicle written circa 1167-1169 by Étienne de Rouen (Stephen of Rouen), a Norman Benedictine monk from Bec-Hellouin. Considered Étienne's principal work, it survives in the Vatican Library. The manuscript was initially anonymous, however it has been accepted for over one hundred years that Étienne is the undisputed author. It is a chronicle of the Normans' history, from their arrival in the former kingdom of Neustria and the founding of Normandy up to the events which occurred during Étienne's life. There is an emphasis on the territorial conflicts which occurred between Kings Henry II and Louis VII.