Dulcinea del Toboso is a fictional character in Miguel de Cervantes' novel 'Don Quixote,' representing the idealized vision of womanhood and romantic love in the mind of the protagonist, Don Quixote. She is not a real person but rather a symbol of Don Quixote's chivalric fantasies and unattainable ideals, serving as the catalyst for his adventures and misadventures throughout the story.