As far as Bruno knows, his nephew Thomas is the the third and last of his orange relatives. But who can be sure about this?
Bruno's Nephew Thomas
How did Thomas come into Bruno's life?
Thomas suddenly occured on Bruno's doorstep and announced that he was his nephew. As he was so desperate, Bruno agreed that Thomas lived with him for a while.
Thomas turned out to be not very talkative. The most important thing for Thomas was to recover and be away from his home. Wherever this was.