Henry (1473-1541), Duke of Saxony, Catherine (1477-1561), Princess of Mecklenburg Unknown painters

The picture has something of this: people, sword, wear, woman, veil, royalty, Renaissance, knight, man, monarch, dress, costume, cape, sash, opera, weapon.
Perhaps it’s a painting of a man and a woman standing next to each other in a room with a red curtain and a red drape on the wall.