Fredrik Vilhelm I (1688-1740), King of Prussia * Friedrich Wilhelm Weidemann (1668-1750)

The picture has something of this: portrait, woman, people, sword, knight, armor, wear, vintage, retro, Renaissance, indoors, cross, dark, Gothic.
Perhaps it’s a close up of a painting of a man wearing a suit of armor and holding a sword in one hand and a yellow ribbon in the other hand.