Tags: Noble.
Louis I (1272 – 22 July 1322) was suo jure Count of Nevers and jure uxoris Count of Rethel.Louis was the son of Robert III Count of Flanders and Yolande Countess of Nevers. He succeeded his parents as Count of Nevers. In December 1290 he married Joan Countess of Rethel and thus became her co-ruler in the County of Rethel.