Sounds like subterfuge and the reason was to hide some dark secret of Judaism, which was less than second class citizenry at the time both Alois and Adolf were born. I think Anna Schickelgrubers original name was 'Shekelgruber', ‘Gruber means low and ’Shekel' is the universal legal tender of the Jew. The Germans dubbed her family “Low Shekelers”, ‘Shekelgruber’. The mother of Hitlers dad was Jewish , Alois lived as a Conservative Jew, as he came into a small fortune from Heidler and inducted his son on the Conservative hatred for Reform Jewry, is why Hitler hated Freud, a reform Jew and Einstein a reform Jew…and let Conservative jews emigrate, to USA, UK and Australia then exterminated the reform Jewry of Europe like fish in a barrel.