As I mentioned before, without more context it's hard to say exactly who Timothy Verrill is in this story. He could be an ordinary person with an interesting personal experience, or someone with a certain reputation in a small community.
The story is about a couple who can't have a child. Then, miraculously, a boy named Timothy shows up in their lives. He has some special and odd qualities.
Timothy Green is a special boy who suddenly appears in a couple's life. He has leaves growing on his legs. He brings a lot of love and change to the small town. In the end, he fades away as the leaves fall off, leaving behind precious memories for those who knew him.
Love and family are main themes. The couple's longing for a child shows their love, and Timothy's arrival and their relationship with him represents family.
Sure. Timothy's life story could be full of various experiences. Maybe he had a happy childhood, growing up in a small town with loving parents. He might have had a passion for learning from a young age, which led him to achieve great academic success later in life.