Schiavone, Natale. Portrait of Grand Duke Alexander Nikolaevich Hermitage ~ part 11

The picture has something of this: people, wear, portrait, man, outfit, woman, royalty, leader, veil, jewelry, weapon, sword, war, monarch, administration, lid.
Perhaps it’s a painting of a man in uniform standing in front of a table with a hat on top of his head and a sword in his other hand.