Gustave Olivier Lannes de Montebello
Gustave Olivier Lannes de Montebello (born December 4, 1804 in Paris - died August 29, 1875 in Château de Blosseville, Pennedepie) was the fourth and last son of Jean Lannes.
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Wikipedia
Gustave Olivier Lannes de Montebello (born December 4, 1804 in Paris - died August 29, 1875 in Château de Blosseville, Pennedepie) was the fourth and last son of Jean Lannes.