Robert I, c.865–923, French king (922–23), son of Count Robert the Strong and younger brother of King Eudes. He inherited from Eudes the territory between the Seine and the Loire rivers. In 922, Robert led a rebellion against King Charles III (Charles the Simple) and was crowned king by a party of nobles and clergy, but he was soon killed in battle. His son-in-law, Raoul of Burgundy, succeeded him. His son was Hugh the Great.