Louis-Antoine de Bourbon, duc d'ANGOULÊME (1775-1844) son of Charles X, fought in the Emigration and the Hundred Days; married Madame Royale. L.A.S., Hartwell March 29, 1813, to a "cousin"; 1 page in-4 (small mourning). Attached is a P.S., brevet d'enseigne de vaisseau for Jacques-Nicolas Lemarié. "I hasten to tell you, Sir, how deeply the Duchesse d'Angoulême and I share your terrible loss. We were seized with this cruel news which we were so far from expecting. You have known me long enough [...] not to doubt all the feelings that my heart is experiencing at this moment and that I cannot return to you as much as I feel them"... Attached is a P.S., brevet d'enseigne de vaisseau for Jacques-Nicolas Lemarié, December 10, 1817, co-signed by Louis XVIII (secretary) and Count Molé (vellum, seal with arms under paper and ink stamps).