Léon-Benoît-Charles Thomas (1826–1894) was a French cardinal.Florida International University, Cardinals of the Roman Catholic Church website, Biographical Dictionary of Pope Leo XIII (1878-1903), Consistory of January 16, 1893 (XVIII)

He studied in Paris and Rome and earned a doctorate in theology in 1856.

He served as Bishop of La Rochelle (1867–1883) and Archbishop of Rouen (1883–1894).New Advent website, Archdiocese of Rouen

He died in 1894 and was buried in the chapel of Sainte-Marguerite in Rouen; bombings during WWII damaged his tomb, and his remains were transferred to the crypt of the archbishops in the chapel of the Sainte-Vierge.

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