When did John Brewster - author die?

There is no widely recognized author named "John Brewster". It's possible that there's a typo or you're thinking of a different name.

To help you find the author you're looking for, could you provide:

* Full name: Is there a middle name or another part of the name you can recall?

* Genre of their writing: What type of books did they write?

* Any other details: Do you remember any titles or anything specific about their books?

With more information, I can help you locate the author you're looking for and find out when they passed away.