Fredrik I (1471-1533), King of Denmark and Norway and Anna, (1487-1514), Princess of Brandenburg Unknown painters

The picture has something of this: people, group, woman, pants, wear, sword, two, man, veil, weapon, son, costume, dress, three, royalty, Renaissance.
Perhaps it’s a painting of a man and a woman standing next to each other on a black and white checkered floor with a red curtain in the background.