caption: The image shows a painting of a man in a blue and white robe, holding a staff, standing in front of a wall with text at the bottom. The painting is believed to be from the 15th century, depicting the man in the center of the frame. He is wearing a white robe with a blue sash and a white collar, and his hands are clasped in a prayer-like gesture. His facial features are detailed and his expression is solemn. The wall behind him is painted in a light blue color, and the text is written in a dark blue font.