Final answer:
Tommy and Wilbur named their new home L'Manberg following their exile by Schlatt, which became a central location in their narrative.
Step-by-step explanation:
Tommy and Wilbur called their new home L'Manberg after Schlatt exiled them. L'Manberg became a symbol of their independence and represented a newfound freedom and unity among the exiles in their own community away from the power and control that had cast them out. While L'Manberg started as a joke, it quickly grew into an important part of the story, forming a pivotal location in the narrative.