This image was acquired from
wikimedia. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
Keywords from Image Description:
Guidobaldo montefeltro . An at later date inscription on the back of the painting describes the subject as Guidobaldo di Montefeltro the Duke of Urbino However similarities with known portraits of Guidobaldo do not match The identity of this man remains unknown reproarte html circa creator Raffael PDold Guidobaldo da Montefeltro