Do you know where in Russia your Arnold's came from??? I am working on German Russian Parish records on 3 villages right now from 1833-1885 and one of these have Arnold's there. I have done from 1833-1854 so far on these 3 villages.
Now to Klingenberg's there are many in another Parish I have been researching in. So any ideas where they came from in Russia??? If not from Russia well then these won't be your Klingenberg's.