Portrait of Grand Duke Mikhail Pavlovich Orest Adamovich Kiprensky (1782-1836)

The picture has something of this: people, portrait, retro, man, wear, vintage, sword, weapon, costume, jewelry, veil, lid, jacket, soldier, antique, boy.
Perhaps it’s a painting of a man in a military uniform with a sword in his right hand and a helmet on his left hand.