^ Ah, but Anderson CAN be German although it sounds Norse-ish. It can also be Scottish. Saint Andrew was patron saint of both Russia and Scotland.
One of my names, Hammond, is secretly German.
My late, Ex, Ex-father-in-law changed it during WWII from Hamburg. His family was Russian-German and came to the USA as the Czarist system was falling to the Reds. The Germans in Russia were brought in by Catherine the Great, as she felt they were better farmers and would be more loyal to her. (She was German.) Germany was torn up by the Hundred Years War and many lower class people were desperate to escape marauding soldiers from all sides. (Think "Stone Soup" and maybe "Girl Genius"!) It was a popular escape route from a local hell-hole.
In return she promised them they could stay 100% German in culture. No Orthodox Church, no Russian language or Cyrillic lettering, no interference by any Russians below czarist emissary.
Of course this would all go away if the Czar did!
So that branch of the family moved to the area around Kiev, no doubt from somewhere near Hamburg. (They may have had NO last name before that... "mere peasants".) They left for America in 1917 via the Black Sea. When WWII hit, my late Ex Ex changed the name to avoid being IDed as enemy. His sons were just pleased to no longer be called hamburgers... (Late Ex Ex = dead, divorced from my late Ex-mother-in-law, and me divorced from his son. 3 x gone!)