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Dates: 1186 - 1203 (Dates are approximate. ) 

Le Chastelain de Couci (modern French Le Chatelain de Coucy) was a French trouvere of the twelfth century. He has been tentatively identified as Guy de Couci who was castellan of Ch√Ęteau de Coucy from 1186 to 1203. Some 26 songs are attributed to him, only 15 of which are considered to be authentic.