Richard III then took the next step; he arranged with king Robert II of France to marry his young daughter, Adelis. She was given rich dowry which included the city and county of Coutances. Even though he was now newly married to a king's daughter, he already had children by a concubine. But unexpectedly Richard III died on 5 or 6 August 1027. He had a son named Nicholas, but the boy was immediately sent to the at Fécamp. With Nicholas out of the way the duchy passed to his Richard III's younger brother Robert, who became the sixth duke of Normandy as Robert I.