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Events on Monday 6 August 1027 1
1027Robert I becomes Duke of NormandyRobert succeeds his brother Richard III amid suspicion of poisoningRichard III, Duke of Normandy, died on 6 August 1027 only months after taking power, reportedly poisoned. He was succeeded by his younger brother Robert I, later called Robert the Magnificent, who would become the father of William the Conqueror.