695071 The Archbishop of Rouen in negotiation with Rollo the Viking to protect the city from attack by other Vikings (litho) by French School, (19th century); Private Collection; (add.info.: Rollo Rognvaldsson (c.846-931) Norse Viking chieftain and 1st Duke of Normandy; also known as Rollon or Hrolf the Ganger; the identity of the archbishop involved is uncertain; some sources indicate Witton, Archbishop of Rouen (892-910), others state his successor, Archbishop Franco (911-9190 and there is a 14th century miniature from the Grandes Chroniques de Saint Denis in the Biblioth癡que de Toulouse which gives a name of Gui; illustration from \'La Normandie Historique, Pittoresque et Monumentale\' by Jules Janin, published by E. Bourdin in 1843;).