Louis I (1272 – 22 July 1322) was suo jure count of Nevers and jure uxoris count of Rethel.
Louis was a son of Count Robert III of Flanders,William H. TeBrake, A Plague of Insurrection: Popular Politics and Peasant Revolt in Flanders, 1323-1328 (University of Pennsylvania Press, 1993), 36. and Countess Yolande of Nevers.The Low Countries and the Disputed Imperial Election of 1314, Henry S. Lucas, Speculum, Vol. 21, No. 1 (Jan., 1946), 80. He succeeded his parents as Count of Nevers. In December 1290, he married Countess Joan of Rethel,David M Nicholas, Medieval Flanders, (Taylor & Francis, 1992), 442. and thus became her co-ruler in the County of Rethel. They had two children: Joan of Flanders Louis I, Count of Flanders, Nevers and Rethel
He died in Paris shortly before his father and thus never succeeded his father as Count of Flanders.
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