Final answer:
The fate of the Llewelyn children is unclear based on the provided information.
Step-by-step explanation:
The fate of the Llewelyn children after the death of their parents is not explicitly mentioned in the provided information. The given passages describe various scenarios and situations involving children and their families, but none specifically relate to the Llewelyn children. Therefore, without additional context or information, it is not possible to determine what happened to them.