In the 'Henry Sugar True Story', Henry Sugar is presumably the protagonist. He could be from any walk of life. He might be a working - class man who had a series of unexpected events occur to him. It's possible that he had a great passion for something, like art or music, and his story could be about how this passion led him on different paths in his life. Or he could be a bit of an enigma, with the story gradually revealing more about who he really is as it progresses.
The truthfulness of the Henry Sugar story is ambiguous. It might have elements that resemble real situations, but it could also be a creation of the author's imagination. Without clear background information, it's difficult to give a definite answer.
Most likely not. The story of Henry Sugar could be based on imagination or a combination of various elements rather than being a true account of real events. Authors often create such tales to engage readers' minds.