Portrait of John Churchill (1650-1722), 1st Duke of Marlborough Sir Godfrey Kneller (1646-1723)

The picture has something of this: people, woman, sword, wear, cape, portrait, armor, weapon, helmet, Renaissance, Gothic, veil, royalty, man, seat.
Perhaps it’s a close up of a painting of a man in a suit of armor with a sword in one hand and a red cape in the other hand.