How does the loyalty of family member effect his actions in book pearl?

It seems you're asking about the impact of family loyalty on a character's actions in the book "Pearl." However, there is no widely known book called "Pearl" with a character whose actions are prominently shaped by family loyalty.

To help me understand your query better, could you please provide more context? For example:

* Is "Pearl" the title of a specific book you are reading? If so, could you tell me the author and any other details you remember about the book?

* Are you thinking of a specific character from a book? Could you describe the character and their family relationships?

* Are you asking about the general concept of family loyalty in literature?

Once I have more information, I can give you a more accurate and helpful response.