Final answer:
Alfred's discovery of commonality with his aunt is not detailed in the provided excerpts, which focus on shared experiences and traits among different characters.
Step-by-step explanation:
Alfred discovered he had something in common with his aunt that was not explicitly mentioned in the excerpts provided. These texts illustrate characters realizing shared experiences, sensations, or hereditary traits, such as living in close quarters and being influenced by their surroundings, having a disposition to cancer in the family, experiencing physical effects from their environment, possessing pride in one's heritage, or coping with imperfections. However, without more context or a specific text reference, it's impossible to ascertain exactly what Alfred and his Aunt have in common.