this is true

Upvote.

hi

And thus ethnically german?

he was a german citicen from ww1 to his death but he was born in astria hungary

So ethnically german.

yes

Fun fact:
Adolf Hitler, Joseph Stalin, Leon Trotsky, Sigmund Freud and Joseph Broz Tito all lived in Vienna at the same time, even in the same neighbourhood

He's considered German Due near of the space of Germany