I've been a fan of Gruff Rhys as a musician for decades, but who knew he'd be such an amazing biographer as well.
The story of John Evans is one lost to history, like all the heroes of the long-dead Spanish colony in Louisiana. By following his trail all the way from Wales to his untimely death, Gruff Rhys opens up the whole history of the North American continent in the late 18th century, with special reference to how Welsh people were involved on all sides (hint: a lot) and attempting to tell the human side of the stories of the Nations who were there before any of the European powers.
He tells this story by reference to his own gig tour following the same route, so we get to see all the comparisons between the political landscapes of the American interior now and back then. He spends a lot of time interviewing historians from both the white (British, American, French, Spanish) colonies and from what remains of the original Nations.
What's really nice about this is how humble Gruff Rhys is the whole time. You expect musicians to be knobs, but Gruff understands his privileged status as a modern Welsh person by comparison with the Welsh of that day and all white people's privileged status with respect to the people their masters were (and still are) stealing land from. And even John Evans doesn't come out as all hero - he was certainly revolutionary but Gruff tells the story as honestly as he can, from everyone's perspective, without leaving out the unsavoury details.
I'm rating a lot of books "5 stars" right now, but I think that's because I'm picking well!!