Aunt Dan is a fictional character from the novel "Aunt Dan and Lemon" by J. P. Donleavy. She is portrayed as a strong and unconventional woman who has a significant influence on the life of the narrator, Lemon. The story explores themes of love, loyalty, and the complexities of relationships. Aunt Dan's character is often seen as both nurturing and challenging, reflecting the duality of familial bonds. Her interactions with Lemon shape his understanding of the world around him.