Like his wife, Bessières was liked for his frankness and generosity. Remaining on good terms with all his colleagues, with the noticeable exception of Lannes, he was not a very great captain, but an intrepid and indefatigable horseman, impetuous and magnificent leader of men. He leaves behind the unanimous memory of an attractive man, a courageous soldier, an excellent husband and father, a reliable friend. After the Empire, in homage to his probity and his disinterestedness, the Emperor of Austria will give his young widow an annuity of 20,000 francs in compensation for the loss of her income from the Duchy of Istria.
This shows the notoriety and the reputation left by this true gentleman to whom Napoleon will pay homage at Saint Helena: "Bessières was, at the same time as a man of war, a gentleman and honor in person. He was of a cold bravery, calm in the midst of fire. Unlike Murat, Bessières was a reserve officer, full of vigor, but prudent and circumspect.”
From his last exile, a grateful Napoleon undertakes to settle the debts of his companion who died poor. In his will, he will also bequeath 400,000 francs to the young Duke of Istria, as the son of his "best friend".
Jean-Claude Banc - Dictionnaire des maréchaux de Napoléon