1st:
Desvernois (ou Devernois), Nicolas Philibert baron (23.ix.1771 (Lons-le-Saulnier) - 13.x.1859 (Lons-le-Saulnier)): col. cmdt. 2.xii.1808; he returned to Naples .iii.1811.
http://books.google.com/books?id=HN8wAQAAIAAJ&pg=PA356
In Spain 1810- p 388-416:
http://books.google.com/books?id=HN8wAQAAIAAJ&pg=PA388
Bio w/ portrait: