Fascinating. 

To most of us, also irrelevant. Not because the individual or his achievements are irrelevant (quite the opposite), but because, as time goes by, "pure" ancestry will be a thing of the past.  It already is for millions in North America, a phenomenon called "browning." 

 Native Canadians should shrug, accept Boyden's multi-racial background and shut the heck up.  Not only because they do themselves public harm by sneering at one of Canada's best novelists, but also because he has become one of THEIR best spokespeople, through his excellent novels. 

But no, whine, whine, whine.  Keep it up and expect that the mean-spirited among us may soon start claiming that the real reason Boyden is so successful--not to mention talented--is because of those CELTIC roots, not the Indigenous ones.