I'm not sure how Penguin can stand by Joseph Boyden much longer. Seems the inconsistencies in background are all his own making and those independently researching his family tree have found zip, nada, nothing indigenous there.

See Peggy Blair for a good summary of Joseph Boyden various misstatements and misdirections.
https://peggyblair.wordpress.com/2017/01/13/the-inconsistencies-in-joseph-boydens-various-backgrounds/

What I found outrageous is that he's charged indigenous groups over $10,000 a pop speaking fees to tell them what it means to be indigenous! Talk about flimflammery.