Dudo, or Dudon, was a Picard historian, and dean of Saint-Quentin, where he was born about 965. Sent in 986 by Albert I, Count of Vermandois, on an errand to Richard I, Duke of Normandy, he succeeded in his mission, and, having made a very favorable impression at the Norman court, spent some years in that country. During a second stay in Normandy, Dudo wrote his history of the Normans, a task which Duke Richard had urged him to undertake. Very little else is known about his life, except that he died before 1043.