[2] Richard had deep religious interests and found he had much in common with King Robert II of France, whom he helped militarily against the Duchy of Burgundy.

[6] Soon after the death of Ethelred, Cnut the Great married Emma, forcing Richard to recognize the new regime as his sister was again queen.

[7] Following the St Brice's Day Massacre ordered by Æthelred in 1013, King Sweyn Forkbeard of Denmark summoned an army to exact revenge on the English and sailed for England.

While Dudo had access to written records and to eye-witnesses, his history is more panegyric than chronicle: its narrative is of the pagan conversion to Christianity and the consequent legitimacy of rule of the dukes.

[12] His other numerous grants to monastic houses tend to indicate the areas over which Richard had ducal control, namely Caen, the Éverecin, the Cotentin, the Pays de Caux, and Rouen.