Louis Jean, duc Decazes

Louis Jean Victor Sévère Decazes de Glücksberg, 4th Duc Decazes and 4th Hertig af Glücksbierg (February 24, 1889 – June 2, 1941) was a French businessman and Thoroughbred racehorse owner and breeder.

Louis Jean Decazes was born in Paris. On October 2, 1912, he married at Savigné-l'Evêque Marie Catherine Germaine Couturié (daughter of the Châtelain of Mesnil) (Paris, April 25, 1885 - Lausanne, October 23, 1968), with whom he had five children. In 1916 he acquired the Haras d'Ouilly stud farm in Pont-d'Ouilly, Calvados. He acquired more land surrounding his property and spent a great deal of money modernizing the facilities. In 1918 he purchased Prince Palatine from the English breeder Jack Barnato Joel. In 1923, Louis Jean Decazes horse L'Yser won the Grand Steeple-Chase de Paris.

Beginning in 1921, he was a partner in some horses with François Dupré and in 1930 sold the Haras d'Ouilly property to Dupré.

Duke Decazes died in Lausanne, Switzerland where the family had fled to escape the German occupation of France in World War II.

His sister was the fashion icon and writer Daisy Fellowes.

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