Complex sentence: Despite his profession of royalism in and after 1815, he remained more or less suspect to the Bourbons and on his death and it was with some difficulty that the notes for his memoirs were saved from seizure.
Split into simpler sentences: Despite his profession of royalism in and after 1815, he remained more-or-less suspect to the Bourbons. On his death it was with some difficulty that the notes for his memoirs were saved from seizure.