caption: The image shows a drawing of a man on a horse, identified as Isabella Gratiola, from the series 'Portrait of Isabella on Horseback'. The man is wearing a long, flowing robe and a helmet, and is holding a sword in one hand and a shield in the other. His facial features are detailed and his expression is serious. The horse is galloping forward, its mane and tail flowing in the wind. The background is a deep blue sky with white clouds.