Pure propaganda, and antisemitic at that, since the Rothschilds are well know Jews.

The paternity of Alois Hitler is uncertain, but was very likely one of the Hiedler brothers. Johann Georg was Alois's stepfather and posthumously acknowledged Alois as his child, while his brother Johann Nepomuk raised Alois in his youth.

There is absolutely no evidence Alois was the son of a member of the famously wealthy banking family.