[...]at least in the States, is between Henry and Arthur Miller.
here too.
I've never been quite able to understand why that happens...
I know why:
because people don't read either of them.
They only get by last-name and hear 'Miller' - oh, yeah, I've heared of that guy! If they'd ever read them, they'd know the difference and Never intermix them.
That's why people like
Bukowski,
Shakespeare,
Hemingway,
Whitman can be happy: Their last-names will always work standing alone.
And it's why I try to get rid of my last name 'Braun' (='Brown'), because I can't imagine Anybody to enter a bookstore, asking for "the latest book by Brown" and being led to mine. A simple 'Roni' is much more unique.
But there are worse things.
I even know of people, who intermix 'Martin Luther' and 'Martin Luther King' !!!