Kristian Albrekt (1641-1694), Duke of Holstein-Gottorp * Jurriaen (Jürgen) Ovens (1623-1678)

The picture has something of this: sword, people, Renaissance, woman, veil, cape, armor, portrait, aura, man, wear, god, saint.
Perhaps it’s a painting of a man in a red and gold outfit with a hat and a cane in his left hand.